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1
MATSUMOTO, TATSUYA, KEIICHI MATSUURA, and NAOTO HANZAWA. "A new species of nine-spined stickleback, Pungitius modestus (Gasterosteiformes, Gasterosteidae), from northern Honshu, Japan." Zootaxa 5005, no. 1 (2021): 1–20. http://dx.doi.org/10.11646/zootaxa.5005.1.1.
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A new species of nine-spined stickleback, Pungitius modestus, is described based on the holotype and 17 paratypes (38.7–51.7 mm standard length) collected from the inland area of Yamagata Prefecture, northern Honshu, Japan. The new species is distinguished from the other species of Pungitius by the following combination of characters: 30–32 small unconnected lateral plates; dorsal-fin rays VIII–X (usually IX)+9–11; anal-fin rays 7–10 (usually 8); pectoral-fin rays 10; a short spiny dorsal fin base (26.5%–29.8% SL); the first spiny dorsal fin spine behind the pectoral-fin base; a long pre-anal fin (59.9%–67.4% SL); the anal-fin spine below the 1st–3rd dorsal-fin rays; a short pelvic-fin spine (6.3%–9.1% SL); a short anal-fin spine (4.1%–6.0% SL); a long caudal peduncle (14.3%–19.7% SL); no body markings; membranes of the dorsal-fin spines dark brown with black pigments; the entire male body, and soft dorsal and anal fins, becoming black in the breeding season; the anteroventral process of the ectocoracoid present; and the dorsal extension of the ascending process of the pelvis level with the dorsal-most actinost.
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FRICKE, RONALD. "Two new species of stargazers of the genus Uranoscopus (Teleostei: Uranoscopidae) from the western Pacific Ocean." Zootaxa 4476, no. 1 (2018): 157. http://dx.doi.org/10.11646/zootaxa.4476.1.15.
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Two new species of stargazers in the Uranoscopus albesca species-complex of the family Uranoscopidae are described from Papua New Guinea, which shares among other characters a concave posterodorsal margin of the pectoral fin. Uranoscopus brunneus n. sp. is described from a single specimen from off southwestern New Britain, and is characterised by lower edge of preopercle with 8 spines; labial fimbriae poorly-developed; anterior nostril with a long tubiform valve, posterior nostril a slit-like pore; supracleithrum with a sharp spine at rear end and five small spines inside; dorsoposterior margin of pectoral fin concave; 62 oblique scale-rows along the sides of the body in adult; pectoral-fin membranes dark brown. Uranoscopus kishimotoi n. sp., described from a single specimen from West Sepik Province, is characterised by the lower edge of preopercle with 3 spines; no labial fimbriae; both anterior and posterior nostrils with long tubiform valves; supracleithrum with a sharp spine at rear end and one additional small spine inside; dorso-posterior margin of pectoral fin concave; 59 oblique scale-rows along the sides of the body in adult; upper pectoral-fin membranes pale, lower membranes brown. The distribution of the species in the U. albesca species-complex is discussed.
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Carvalho, Thaís Isabela, Julia Klaczko, and Veronica Slobodian. "Pectoral-fin glands and delivery apparatus in the catfish genus Brachyrhamdia Myers, 1927 (Siluriformes: Heptapteridae)." Papéis Avulsos de Zoologia 61 (August 24, 2021): e20216174. http://dx.doi.org/10.11606/1807-0205/2021.61.74.
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The Siluriformes, popularly known as catfishes, are probably the vertebrate group with the highest diversity of venomous animals, even though only approximately a hundred venomous catfishes are reported to date. Venomous catfishes might present a delivery system apparatus, formed by an unbranched ray at the leading edge of pectoral and dorsal fins (spine), which can be stiffened and pungent, while venom glands can be present at the surface of such spines and/or the axillary region. This work investigated the presence, morphology and distribution of glands and pectoral-fin delivery apparatus in the heptapterid Brachyrhamdia genus. Pectoral-fin spine external morphology was compared across all valid species in the genus, histological sections of the pectoral-fin spine and axillary regions of B. heteropleura and B. marthae were produced, and dissections of the pectoral girdle region of the mentioned species were analyzed. The histological sections confirmed the presence of pectoral-fin glands at the surface of the pectoral-fin spine of Brachyrhamdia species, and cellular morphology indicates these glands are probably venomous. Also, we found a piriform gland at the axillary region, whose cell morphology is like the reported for other catfishes. However, we cannot currently confirm or deny axillary gland participation in the venom delivery apparatus. This work constitutes the first report of venom glands in Brachyrhamdia, and the first description of Heptapteridae axillary glands.
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MATSUMOTO, TATSUYA, and HIROYUKI MOTOMURA. "Neomerinthe ornithoptera, a new species of scorpionfish (Teleostei: Scorpaenidae) from the southwestern Pacific Ocean, with a reassessment of the diagnosis for N. pallidimacula (Fowler 1938)." Zootaxa 5428, no. 1 (2024): 135–45. http://dx.doi.org/10.11646/zootaxa.5428.1.7.
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Neomerinthe ornithoptera n. sp., described on the basis of three specimens from Fiji and the Wallis and Futuna Islands, southwestern Pacific Ocean, was previously reported as Neomerinthe pallidimacula (Fowler 1938), due to its characteristic lack of both lateral lacrimal and second preopercular spines. The new species is clearly distinguished from Indo-Pacific congeners, including N. pallidimacula, by the following combination of characters: pectoral-fin rays 18; scale rows in longitudinal series 44 or 45; pored lateral-line scales 23; scale rows above lateral line 6 or 7, below lateral line 12, between sixth dorsal-fin spine base and lateral line 5, between last dorsal-fin spine base and lateral line 5; upper gill rakers 6, lower gill rakers 13, total gill rakers 19; longitudinal ridge on lateral surface of maxilla absent; many small cycloid scales on base of pectoral fin and ventral surface of body between isthmus and posterior to pelvic fin; pectoral-fin ray length 37.6–40.0% of SL; first anal-fin spine length 6.9–8.5% of SL; second anal-fin spine length 23.3–25.5% of SL; third anal-fin spine length 22.7–23.1% of SL; pelvic-fin spine length 17.9–18.1% of SL; longest pelvic-fin soft ray length 26.6–29.2% of SL; and several lower pectoral-fin rays markedly elongated. In addition, the diagnosis of N. pallidimacula shows the species to be similar to Neomerinthe bucephalus (Alcock 1896), although distinguished from the latter by the following features: upper-jaw length 25.0% of SL; maxilla depth 8.2% of SL; eleventh dorsal-fin spine length 5.7% of SL; and 22 pored lateral-line scales.
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MARCENIUK, ALEXANDRE P. "Description of Cathorops manglarensis, a new species from the Colombian Pacific, with redescription of Cathorops multiradiatus (Siluriformes; Ariidae)." Zootaxa 1529, no. 1 (2007): 33–48. http://dx.doi.org/10.11646/zootaxa.1529.1.3.
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Since it was described, Cathorops multiradiatus has been differentiated from congeners through the large number of anal-fin rays ( 25 - 27). In this study, C. multiradiatus is redescribed and a new sympatric species with similar number of anal-fin rays is described and intersexual differences of both species evaluated. Cathorops manglarensis differs from C. multiradiatus by possessing few gill rakers on the first arch ( 13 - 16 vs. 16 - 19), a longer maxillary barbel (28.4 - 38.2 vs. 22.9 - 27.7% SL), longer pectoral-fin spine (18.5 - 22.5 vs. 16.9 - 18.7% SL), posterior margin of pectoral-fin spine with short and inconspicuous serrations ( vs. posterior margin of pectoral-fin spine with long and conspicuous serrations), dorsal-fin spine shorter than pectoral-fin spine ( vs. dorsal-fin spine longer than pectoral-fin spine), and large accessory tooth plates with large and numerous molariform teeth ( vs. small accessory tooth plates with small and few molariform teeth). The nominal species Tachysurus emmelane and Tachysurus equatorialis are considered junior synonyms of C. multiradiatus and a key to species of Cathorops from the Pacific coast of Central and South America is provided.
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Hanke, Gavin F. "Paucicanthus vanelsti gen. et sp. nov., an Early Devonian (Lochkovian) acanthodian that lacks paired fin-spines." Canadian Journal of Earth Sciences 39, no. 7 (2002): 1071–83. http://dx.doi.org/10.1139/e02-023.
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The acanthodian Paucicanthus vanelsti gen. et sp. nov. is described from six body fossils from Lower Devonian (Lochkovian) rocks of the southern Mackenzie Mountains, Northwest Territories, Canada. This new species is unique among acanthodians in that it lacks both pectoral and pelvic fin-spines. In the absence of fin-spines, the leading edges of the pectoral and pelvic fins are reinforced by enlarged scales. The anatomy of the acanthodiform Traquairichthys pygmaeus is similar to P. vanelsti in that both lack pelvic fin-spines, although T. pygmaeus also lacks pelvic fins. Similarly, the acanthodian Yealepis douglasi lacks both paired and median fin-spines, and its anatomy resembles that of P. vanelsti based only on the loss of paired fin-spines. The lack of paired and (or) median fin-spines in these three taxa contrasts with the widely held view that acanthodian fins all were preceded by spines. The anatomy of P. vanelsti also is similar to that of the acanthodian Brochoadmones milesi in that both have a completely unossified endoskeleton, slightly elevated pectoral fins, and deep, compressed bodies. The median fin-spines of P. vanelsti have an anterior leading edge rib followed by a field of fine striations. This striated ornamentation coupled with few leading edge ribs also is seen on fin-spines of Cassidiceps vermiculatus and primitive acanthodiform acanthodians (e.g., Mesacanthus and Lodeacanthus species). I tentatively suggest that this fin-spine ornament indicates relationship between P. vanelsti, acanthodiform acanthodians, and C. vermiculatus. However, a cladistic analysis is required to test whether or not the characteristics such as fin-spine loss, unossified endoskeleton, elevated pectoral fins, deep compressed bodies, and (or) median fin-spine ornamentation are synapomorphies within the Acanthodii or evolved convergently within the class.
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YATO, TAKUJI, and ELAINE HEEMSTRA. "A new deepwater gurnard of the genus Pterygotrigla (Scorpaeniformes: Triglidae) from the southwestern Indian Ocean." Zootaxa 4706, no. 1 (2019): 189–200. http://dx.doi.org/10.11646/zootaxa.4706.1.8.
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A new species of deepwater gurnard, Pterygotrigla (Otohime) madagascarensis sp. nov. is described, based on two specimens collected on the upper continental slope south of Madagascar, in the southwestern Indian Ocean. The new species belongs to the tropical Indo-Pacific subgenus Otohime in having a short rostral projection, short posttemporal spine, long opercular spine and no cleithral spine. It is most similar to P. (O.) multipunctata, and P. (O.) urashimai, in having no large blotch on the first dorsal fin, a jet-black blotch and no white ocellus on the inner pectoral-fin surface, with no scales on the breast and front of the pectoral-fin base. However, the new species differs from the latter two species by the combination of the following characters: first dorsal-fin spines 7, second dorsal-fin rays 12, dusky rays on the inner pectoral-fin surface, one row of blackish botches on second dorsal fin, and no papillae on the dorsal surface of oral cavity. A key is provided for the twelve Pterygotrigla species now in the subgenus Otohime.
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NG, HEOK HEE, CARL J. FERRARIS, JR., and DAVID A. NEELY. "The catfish genus Erethistoides (Siluriformes: Sisoridae) in Myanmar, with descriptions of three new species." Zootaxa 3254, no. 1 (2012): 55. http://dx.doi.org/10.11646/zootaxa.3254.1.3.
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The presence of the sisorid catfish genus Erethistoides in Myanmar, represented by three new species, is recorded for thefirst time. This discovery from the Irrawaddy and Sittang river drainages from central Myanmar and the Ann ChaungRiver drainage in western Myanmar extends the documented range of the genus beyond the Ganges/Brahmaputra Riverbasin. Erethistoides longispinis is distinguished from congeners in having the following unique combination ofcharacters: length of the dorsal-fin spine 24–27% SL, length of the pectoral-fin spine 29–35% SL, and absence ofproximally-directed serrations on the anterior edge of the pectoral spine. Erethistoides luteolus differs from congeners inhaving the following combination of characters: yellow base color of the body, body with distinct bands, vertebrae 30,premaxillary tooth band partially exposed when the mouth is closed, length of the dorsal-fin spine 14–15% SL, length ofthe pectoral-fin spine 21–24% SL, absence of proximally-directed serrations on the anterior edge of the pectoral spine,length of the adipose-fin base 16–17% SL, length of the caudal peduncle 22–25% SL and depth of the caudal peduncle 6–7% SL. Erethistoides vesculus is distinguished from congeners in having the following combination of characters: creambase color of the body, body with distinct bands, vertebrae 30, premaxillary tooth band partially exposed when the mouthis closed, length of the dorsal-fin spine 15% SL, length of the pectoral-fin spine 22–23% SL, absence of proximally-directed serrations on the anterior edge of the pectoral spine, length of the adipose-fin base 14–15% SL, length of the caudal peduncle 19–21% SL and depth of the caudal peduncle 4–5% SL.
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Webb McAdams, Amanda L., and Michael E. Smith. "The relationship between body size and stridulatory sound production in loricariid catfishes." Journal of the Acoustical Society of America 154, no. 6 (2023): 3672–83. http://dx.doi.org/10.1121/10.0022575.
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Sound production capabilities and characteristics in Loricariidae, the largest catfish family, have not been well examined. Sounds produced by three loricariid catfish species, Otocinclus affinis, Pterygoplichthys gibbiceps, and Pterygoplichthys pardalis, were recorded. Each of these species produces pulses via pectoral-fin spine stridulation by rubbing the ridged condyle of the dorsal process of the pectoral-fin spine base against a matching groove-like socket in the pectoral girdle. Light and scanning electron microscopy were used to examine the dorsal process of the pectoral-fin spines of these species. Mean distances between dorsal process ridges of O. affinis, P. gibbiceps, and P. pardalis were 53, 161, and 329 μm, respectively. Stridulation sounds occurred during either abduction (type A) or adduction (type B). O. affinis produced sounds through adduction only and P. pardalis through abduction only, whereas P. gibbiceps often produced pulse trains alternating between abduction and adduction. In these species, dominant frequency was an inverse function of sound duration, fish total length, and inter-ridge distance on the dorsal process of the pectoral-fin spine and sound duration increased with fish total length. While stridulation sounds are used in many behavioral contexts in catfishes, the functional significance of sound production in Loricariidae is currently unknown.
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CONDE-SALDAÑA, CRISTHIAN C., JUAN G. ALBORNOZ-GARZÓN, JORGE E. GARCÍA-MELO, JORGE A. DERGAM, and FRANCISCO A. VILLA-NAVARRO. "A new species of Pimelodella Eigenmann & Eigenmann, 1888 (Siluriformes: Heptapteridae) from the Sierra Nevada de Santa Marta, Colombia." Zootaxa 4668, no. 4 (2019): 562–74. http://dx.doi.org/10.11646/zootaxa.4668.4.8.
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A new species of Pimelodella is described from northern coastal drainages of the Sierra Nevada de Santa Marta (SNSM), Colombia. The new species is diagnosed from all trans-Andean congeners by the following unique combination of characters: head length 22.2–23.7% SL, bony interorbital width 17.6–21.6% HL, maxillary barbels length 53.0–68.3% SL, inner mental-barbels length 14.4–20.0% SL, body width 17.6–21.1% SL, dorsal-fin spine length 8.3–13.7% SL, dorsal-fin base 12.3–14.9% SL, pectoral-fin spine length 12.9-14.5% SL, pectoral-fin spine length without dentations on the distal posterior margin 21.6–29.8% in pectoral-fin spine length, maximum depth of dentations in posterior margin of pectoral-fin spine 1.40–1.68 times in the width of the spine at its base, adipose-fin base length 22.8–26.4% SL, caudal-peduncle depth 9.2–10.5% SL, 40 vertebrae, having a conspicuous paired dark brown stripe on the dorsal surface of body, extending from posterior margin of head to caudal-fin insertion and a wide dark brown midlateral stripe present. The isolated occurrence of this new taxon living in allopatry in coastal drainages of the SNSM could have interesting biogeographic implications for dispersal and vicariance processes of the ichthyofauna from northern South America.
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Burrow, Carole J., Susan Turner, John G. Maisey, Sylvain Desbiens, and Randall F. Miller. "Spines of the stem chondrichthyan Doliodus latispinosus (Whiteaves) comb. nov. from the Lower Devonian of eastern Canada." Canadian Journal of Earth Sciences 54, no. 12 (2017): 1248–62. http://dx.doi.org/10.1139/cjes-2017-0059.
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The higher taxonomic affinities of fin spines from the Lower Devonian (Emsian) Atholville beds, Campbellton Formation, near Campbellton, New Brunswick, Canada, originally identified as Ctenacanthus latispinosus, have been uncertain since they were first described by Whiteaves in the late 19th century. Woodward subsequently referred the species to Climatius, because the isolated Canadian fin spines were similar to those preserved in articulated specimens of Climatius reticulatus from the Lower Old Red Sandstone (Lochkovian) of Scotland. Spines of the same form as the Atholville beds specimens are also found in Emsian mudstones on the Gaspé Peninsula, Québec. One of the fin spine forms appears identical to the pectoral fin spines on an articulated specimen from the Campbellton Formation that has been assigned to the stem chondrichthyan Doliodus problematicus, a taxon erected for isolated diplodont teeth. By comparison with median and paired fin spine morphology on the climatiiform Climatius reticulatus from the Scottish Lower Old Red Sandstone and the spines preserved on the articulated Doliodus, isolated fin spines from Campbellton and several localities on the Gaspé Peninsula are now identified as belonging to Doliodus latispinosus comb. nov. The variety of spine morphotypes recognized—pectoral, prepelvic, prepectoral, and median—support a phylogenetic position within the “acanthodians” rather than “conventionally defined chondrichthyans”.
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Rayamajhi, Asha, and M. Arunachalam. "A New Record of the Pseudolaguvia nubila (Siluriformes: Erethistidae) from Baandhkhola (Stream) in Central Nepal." International Journal of Applied Sciences and Biotechnology 5, no. 4 (2017): 434–41. http://dx.doi.org/10.3126/ijasbt.v5i4.18131.
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In this study, we describe a miniature sisorid catfish of the family Erethistidae, as a new distributional record of Pseudolaguvia nubila from the Baandhkhola (stream), a tributary of Narayani River inCentral Nepal. Pseudolaguvia nubila shows its distribution to Nepal is distinguished from its congeners by combination of characters, such as- two broad and distinct yellowish vertical bands at the origin of dorsal fin and anal fin, smooth outer edge of the dorsal fin spine, dorsal fin spine length 13.23-17.60 % SL, pectoral fin length 24.89-26.27 % SL, pectoral fin spine length 18.39-19.48 % SL and body depth at anus 17.22-18.69 % SL.Int. J. Appl. Sci. Biotechnol. Vol 5(4): 434-441
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CHUNGTHANAWONG, SIRIKANYA, and HIROYUKI MOTOMURA. "A new species of the waspfish genus Ocosia (Teleostei: Tetrarogidae) from the Coral Sea, with a key to species in the genus." Zootaxa 5091, no. 3 (2022): 37–50. http://dx.doi.org/10.11646/zootaxa.5091.3.3.
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The new waspfish Ocosia dorsomaculata n. sp. (Tetrarogidae) is described, based on specimens from Australia (5) and New Caledonia (51). Although O. dorsomaculata and Ocosia apia Poss & Eschmeyer 1975 both share modally XVI, 8 dorsal-fin rays with a long second dorsal-fin spine, and presence of supraocular, lateral lacrimal, and suborbital spines, the former has modally 13 pectoral-fin rays (vs. usually 12 in the latter), a lower modal count of total gill rakers (10 vs. 16–18), greater upper-jaw length, greater third to sixth dorsal-fin spine lengths, the third dorsal-fin spine slightly shorter than the second dorsal-fin spine (vs. third spine markedly shorter than second spine), 1 or 2 prominent pale brown to dark brown blotches on the membrane between the fifth to eighth or sixth to ninth dorsal-fin spines (vs. 1 blotch on the membrane around the third dorsal-fin spine and 1 blotch on the membrane between the sixth to eighth dorsal-fin spines), and body with 11–15 longitudinal pale brown to dark brown bars along lateral line (vs. irregular brown specks). A key to the species of Ocosia is given.
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KOSYGIN, LAISHRAM, PRATIMA SINGH, and SHIBANANDA RATH. "A new species of Glyptothorax (Teleostei: Sisoridae) from the Brahmaputra River basin, Arunachal Pradesh, India." Zootaxa 5023, no. 2 (2021): 239–50. http://dx.doi.org/10.11646/zootaxa.5023.2.4.
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Glyptothorax rupiri, a new sisorid catfish, is described from the Brahmaputra River basin in Arunachal Pradesh, northeast India. It differs from its congeners in the Indian subcontinent by the following combination of characters: the presence of plicae on the ventral surface of the pectoral spine and first pelvic-fin ray; a posteriorly serrated dorsal-fin spine, its length 11.3–12.2% SL; body depth at anus 11.2–13.4% SL; a thoracic adhesive apparatus longer than broad, with a V-shaped median depression which opens posteriorly; an arrow-shaped anterior nuchal plate element; adipose-fin base length 10.9–12.6% SL; nasal barbel not reaching anterior orbital margin; 14–18 serrae on posterior margin of the pectoral-fin spine; body with two longitudinal pale-cream stripes; densely tuberculated skin; and the presence of numerous tubercles on the dorsal surface of pectoral and pelvic-fin rays.
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VIJAYAKRISHNAN, BALAJI, JAYASIMHAN PRAVEENRAJ, and ABHISEK MISHRA. "Pseudolaguvia permaris, a new catfish from the Eastern Ghats of India (Teleostei: Sisoridae)." Zootaxa 5297, no. 2 (2023): 271–81. http://dx.doi.org/10.11646/zootaxa.5297.2.6.
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Pseudolaguvia permaris, a new sisorid catfish is described from the Mahanadi River basin in Odisha, India. The new species can be distinguished from congeners in having the following combination of characters: serrated anterior margin of dorsal-fin spine, thoracic adhesive apparatus not extending beyond base of last pectoral-fin ray, caudal peduncle depth 8.6–10.2% SL, body depth at anus 15.3–20.2% SL, adipose-fin base length 13.6–18.1% SL, dorsal to adipose distance 11.4–14.4% SL, length of pectoral-fin spine 19.3–28.0% SL, length of dorsal-fin spine 16.5–20.4% SL, head width 21.6–25.9% SL and indistinct, creamish bands on the body.
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NG, HEOK HEE. "Akysis fontaneus, a new species of catfish (Siluriformes: Akysidae) from Sumatra." Zootaxa 1973, no. 1 (2009): 41–50. http://dx.doi.org/10.11646/zootaxa.1973.1.3.
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Akysis fontaneus, new species, is described from a spring-fed stream in the Batang Hari drainage in central Sumatra. It is distinguished from congeners in having a unique combination of the following characters: weakly emarginate caudal fin, convex dorsal surface of neurocranium making predorsal profile appear steeply sloping, presence of 4 large serrations on posterior edge of pectoral spine that are more than half width of spine, predorsal length 34.5% SL, pectoral-fin length 21.7% SL, length of adipose-fin base 18.7% SL and interorbital distance 42.3% HL. Akysis fontaneus is most similar to A. heterurus, also from the Batang Hari River drainage, but the differing morphology of the predorsal area (particularly the neurocranium) and shorter pectoral fin distinguishes it from A. heterurus.
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Fricke, Ronald. "Callionymus madangensis, a new species of dragonet from Papua New Guinea, southwestern Pacific Ocean (Teleostei: Callionymidae)." Journal of the Ocean Science Foundation 13 (November 6, 2014): 1–15. https://doi.org/10.5281/zenodo.1050489.
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A new species of dragonet, Callionymus madangensis from Madang, Papua New Guinea, is described on the basis of a single male specimen collected with a trawl in about 30–40 m depth near Madang. The new species is characterised within the subgenus Pseudocalliurichthys by a small branchial opening; head short (3.7 in SL); eye large (2.3 in head length); preopercular spine with a short, straight main tip, six to seven curved serrae on its dorsal margin and a strong antrorse spine at its base, ventral margin smooth, slightly concave; first dorsal fin much higher than second dorsal fin, with 4 spines, first spine with a long filament (male); second dorsal-fin distally straight, with 8 unbranched rays (last divided at base); anal fin with 7 unbranched rays (last divided at base); 17 pectoral-fin rays; caudal fin elongate, distally rounded, nearly symmetrical in male (upper rays not much shorter than lower rays); sides of head, membrane connecting pelvic fin pectoral fin, and body with small ocelli; first dorsal fin plain dark grey; second dorsal fin translucent, rays spotted; anal fin dark grey; lower margin of caudal fin dark grey, remainder with vertical rows of brown spots. The new species is compared with similar species. Revised keys to callionymid fish species of New Guinea, as well as of the subgenus Pseudocalliurichthys, are presented.
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Ottoni, Felipe, José Leonardo Mattos, and Maria Barbosa. "Description of a new species of Microglanis from rio Barra Seca basin, southeastern Brazil (Siluriformes: Pseudopmelodidae)." Vertebrate Zoology 60, no. 3 (2010): 187–92. http://dx.doi.org/10.3897/vz.60.e31008.
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Microglanis minutus, new species, is described from the rio Barra Seca basin. This species belongs to the Microglanis parahybae species complex by the following combination of characters: body light brown with fi rst and second dark brown saddles not extending ventrally below horizontal through pectoral-fin origin; light oval spot located below dorsalfin spine; third dark brown saddle not reaching anal-fin base; and caudal fin with upper lobe more developed than the inferior. The new species differs from all others M. parahybae species complex by a combination of morphological characters: pectoral and anal fins mottled or with relatively faint bands; caudal fin emarginate, trunk with dark brown saddles; caudal peduncle with faint to dark blotch irregularly shaped, caudal fin lightly mottled with narrow vertical dark brown band across central portions of lobes, dark saddle beneath adipose fin not extending ventrally to anal fin as continuous bar, continuous portion of lateral line not reaching vertical through origin of adipose fin, tip of pectoral spine as distinct bony point, a wider head, a dark blotch beneath adipose fin not extending to anal fin, distal portion of anal fin without dark band, dark saddle beneath adipose fin extending ventrally to more than the half of trunk and a light oval spot located below dorsal-fin spine.
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Ottoni, Felipe, JOSÉ L. O. Mattos, and Maria Barbosa. "Description of a new species of Microglanis from rio Barra Seca basin, southeastern Brazil (Siluriformes: Pseudopmelodidae)." Vertebrate Zoology 60 (December 13, 2010): 187–92. https://doi.org/10.3897/vz.60.e31008.
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Microglanis minutus, new species, is described from the rio Barra Seca basin. This species belongs to the Microglanis parahybae species complex by the following combination of characters: body light brown with fi rst and second dark brown saddles not extending ventrally below horizontal through pectoral-fin origin; light oval spot located below dorsalfin spine; third dark brown saddle not reaching anal-fin base; and caudal fin with upper lobe more developed than the inferior. The new species differs from all others M. parahybae species complex by a combination of morphological characters: pectoral and anal fins mottled or with relatively faint bands; caudal fin emarginate, trunk with dark brown saddles; caudal peduncle with faint to dark blotch irregularly shaped, caudal fin lightly mottled with narrow vertical dark brown band across central portions of lobes, dark saddle beneath adipose fin not extending ventrally to anal fin as continuous bar, continuous portion of lateral line not reaching vertical through origin of adipose fin, tip of pectoral spine as distinct bony point, a wider head, a dark blotch beneath adipose fin not extending to anal fin, distal portion of anal fin without dark band, dark saddle beneath adipose fin extending ventrally to more than the half of trunk and a light oval spot located below dorsal-fin spine.
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PRAVEENRAJ, JAYASIMHAN, BALAJI VIJAYAKRISHNAN, AKUM LIMA, and SHANTABALA DEVI GURUMAYUM. "A new sisorid catfish of the genus Pseudolaguvia (Teleostei: Sisoridae) from Nagaland, north-eastern India." Zootaxa 5082, no. 1 (2021): 77–86. http://dx.doi.org/10.11646/zootaxa.5082.1.7.
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Pseudolaguvia vespa, new species, is described from the Tsücha River, Mokokchung district, Nagaland, India. The new species can be distinguished from congeners in having the following combination of characters: length of dorsal-fin spine 12.3–16.8% SL, a smooth anterior edge of the dorsal-fin spine, caudal peduncle depth 9.0–10.5% SL, body depth at anus 15.6–17.7% SL, caudal fin length 20.7–24.5% SL, pectoral fin length 20.1–24.1% SL, interorbital distance 22.7–28.1% SL, thoracic adhesive apparatus extending to midway between base of last pectoral-fin ray and pelvic-fin origin, and live specimens with two irregular, chrome-yellow bands on the body.
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NG, HEOK HEE. "Akysis bilustris, a new species of catfish from southern Laos (Siluriformes: Akysidae)." Zootaxa 3066, no. 1 (2011): 61. http://dx.doi.org/10.11646/zootaxa.3066.1.5.
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Akysis bilustris, new species, is described from the Xe Kong drainage (a subdrainage of the Mekong River) in southern Laos. It is distinguished from congeners in having a unique combination of the following characters: eye diameter 14.0– 17.5% HL, serrae on posterior margin of pectoral spine 2–3 and longer than half width of spine, pectoral fin reaching to or overlapping pelvic-fin base (length 24.5–29.3% SL), adipose-fin base length 14.3–18.3% SL, body depth at anus 11.4– 13.8% SL, caudal-peduncle length 19.6–23.4% SL, caudal-peduncle depth 6.7–9.2% SL, caudal fin emarginate, and vertebrae 30–31.
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NG, HEOK HEE, and LALRAMLIANA _. "Pseudolaguvia spicula, a new sisorid catfish (Teleostei: Sisoridae) from Bangladesh and northeastern India." Zootaxa 2558, no. 1 (2010): 61. http://dx.doi.org/10.11646/zootaxa.2558.1.5.
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This study describes Pseudolaguvia spicula, a new miniature sisorid catfish from the Surma-Meghna River system in India and Bangladesh. Pseudolaguvia spicula can be distinguished from congeners in having a combination of: head width 19.2–22.6% SL, dorsal-fin spine length 11.6–14.3% SL, length of dorsal-fin base 13.2–15.9% SL, pectoral-fin spine length 15.7–17.4% SL, length of adipose-fin base 14.7–17.1% SL, pelvic-fin length 14.6–17.1% SL, body depth at anus 12.8–16.8% SL, caudal peduncle length 15.4–17.9% SL, caudal peduncle depth 7.9–9.6% SL, caudal-fin length 24.2–27.5% SL, snout length 48.6–51.9% HL, eye diameter 10.6–13.9% HL, 30–32 vertebrae, smooth anterior edge of dorsal-fin spine, thoracic adhesive apparatus reaching beyond base of last pectoral-fin ray, absence of pale y-shaped marking on dorsal surface of head and supraoccipital process, and indistinct, pale vertical bands on body.
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CHENG, JIAN-LI, J. ANDRÉS LÓPEZ, and E. ZHANG. "Pseudobagrus fui Miao, a valid bagrid species from the Yangtze River drainage, South China (Teleostei: Bagridae)." Zootaxa 2072, no. 1 (2009): 56–68. http://dx.doi.org/10.11646/zootaxa.2072.1.3.
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Pseudobagrus fui Miao is a valid bagrid species that can be separated from all its congeners in having 27–33 anal-fin rays. Among the species of Pseudobagrus, it forms part of a group of approximately 20 species putatively characterized by having a smooth anterior margin of the pectoral-fin spine and short maxillary barbels not extending to the base of the pectoral-fin spine. Pseudobagrus fui, together with P. nitidus and P. vachelli, can be differentiated from all other forktailed species of this group by having no fewer than 20 branched anal-fin rays, the posterior end of the anal-fin base posterior to the vertical through the posterior end of the adipose-fin base, and anal-fin base longer than the adipose-fin base. It further differs from P. nitidus in having a gas bladder without beaded lateral and posterior margins, and from P. vachelli in having short maxillary barbels not extending to the base of the pectoral-fin spine. Pseudobagrus fui is currently known from the main stream of the upper Yangtze River and its tributaries, the Min River, Jialing River, Tuo River, Wu River and Chishui River in Sichuan Province, Guizhou Province, and the Chongqing City. The identity and nomenclature of Pseudobagrus nitidus is also discussed.
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Bakhshalizadeh, S., A. Bani, S. Abdolmalaki, and J. T. Ponce-Palafox. "Marking fin spine of juvenile sturgeon (acipenseriformes: acipenseridae) using oxytetracycline and the comparing of growth performance." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 73, no. 4 (2021): 902–8. http://dx.doi.org/10.1590/1678-4162-12270.
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ABSTRACT This study aimed to describe and validate the formation of the rings in the spine of the pectoral fin and to determine the coherence of the OTC mark with the rings of three species of Caspian Sea sturgeon, the Persian sturgeon (Acipenser persicus), the Starry sturgeon (Acipenser stellatus) and Ship sturgeon (Acipenser nudiventris). Validation was achieved by comparing the total radius of the fin spine of fish of known age after one and two years of growth with the measured radius of the first and second rings in the zone. There was no overlap between the measured radius for the first year and the increase for the second. The Ship sturgeon showed the largest width of the second ring followed by the Persian sturgeon and Stellate sturgeon. The results indicate that the highest growth parameter belongs to the juvenile Ship sturgeon. This research showed that chemically marking the fin spines of juvenile Acipenseridae leads to unbiased estimates and contributes to the knowledge of the population dynamics of these species. The study found that the combination of the dial ring of the pectoral fin spine with growth validated the age estimation in juvenile sturgeon Ship, Persian, and Starry sturgeon.
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LOKESHWOR, YUMNAM, and PRINGRANCHI DOKGRE MARAK. "Pseudolaguvia meghalayaensis, a new diminutive sisorid catfish (Teleostei: Siluriformes) from Northeastern India." Zootaxa 5175, no. 3 (2022): 367–76. http://dx.doi.org/10.11646/zootaxa.5175.3.3.
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Pseudolaguvia meghalayaensis, a new diminutive sisorid catfish, is described from the confluence of Rongkil and Rongdal streams (tributaries of the Brahmaputra River) in Meghalaya, India. It is distinguished from its congeners by a combination of characters: striae in thoracic adhesive apparatus strongly anastomosing and break up into small rounded plaques posteromedially, smooth anterior edge of dorsal spine, 8 branched pectoral-fin rays, supraoccipital spine not reaching nuchal shield, pectoral-fin length 17.1–20.1% standard length (SL), predorsal length 40.4–43.8% SL, preanal length 71.1–73.1% SL, body depth at anus 15.6–18.1% SL, anal-fin base length 12.2–12.7% SL, and post adipose fin length12.3–12.6% SL.
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Gerald, R. Allen, and V. Erdmann Mark. "Sueviota tubicola, a new species of coral-reef goby (Teleostei: Gobiidae) from Papua New Guinea." Journal of the Ocean Science Foundation 25 (January 29, 2017): 1–7. https://doi.org/10.5281/zenodo.262097.
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A new species of gobiid fish, Sueviota tubicola, is described from Milne Bay Province, Papua New Guinea, on the basis of nine specimens, 13.0–17.6 mm SL. The new species is most similar to S. larsonae from the Northern Territory of Australia and adjacent Arafura Sea, with both species sharing a suite of features that include an identical pattern of cephalic sensory pores, usually 9 segmented dorsal-fin rays and 8 segmented anal-fin rays, black-tipped anterior nostril tubes, the presence of a full pelvic frenum, and a filamentous first dorsal-fin spine. However, the new species differs from S. larsonae in having a pair of large dark spots on the pectoral-fin base, 26 longitudinal scales (versus 21–24), 14–15 branched pectoral-fin rays (versus 6–9), and the first two dorsal-fin spines elongated (vs. only the first dorsal-fin spine in S. larsonae). Moreover, S. tubicola inhabits shallower depths (20–35 m) compared to the 40–82 m range of S. larsonae. All type specimens of S. tubicola were associated with an unidentified tubeworm that constructs vertical, stick-like structures projecting about 30 cm above the silty-sand substrate and encrusted with sessile invertebrates.
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WIBOWO, KUNTO, JEFFREY W. JOHNSON, and HIROYUKI MOTOMURA. "Scorpaena regina, a new scorpionfish (Teleostei: Scorpaenidae) from the east coast of Queensland, Australia." Zootaxa 4706, no. 2 (2019): 296–310. http://dx.doi.org/10.11646/zootaxa.4706.2.5.
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The new, small-sized scorpionfish, Scorpaena regina, is described on the basis of 59 specimens from the east coast of Queensland, Australia, from depths of 2–57 m. The new species is most similar to the southwestern Pacific species, S. bulacephala and the Hawaiian endemic S. colorata, all three species being distinguished from all other Indo-Pacific species of Scorpaena by the following combination of characters: exposed cycloid scales covering the anteroventral surface of the body and pectoral-fin base, the lateral surface and dorsal margin of the lacrimal without spines, and the lateral surface of the maxilla without longitudinal ridges. The new species differs from S. bulacephala and S. colorata in having lower numbers of pectoral-fin rays, scale rows below the lateral line, and total gill rakers [13–17 (mode 16), 11–14 (12), and 13–17 (14 or 15), respectively], a simple anterior lacrimal spine, posterior tip of the pectoral fin (seventh or eighth ray longest) not reaching to vertical through first anal-fin spine, smaller body size (maximum size 64.5 mm SL), and shallower habitat (2–57 m). Morphological ontogenetic changes in the relative lengths of some body proportions in the new species are also discussed.
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NG, HEOK HEE, and LAKPA TAMANG. "Pseudolaguvia viriosa, a new catfish (Teleostei: Sisoridae) from north-eastern India." Zootaxa 3522, no. 1 (2012): 81. http://dx.doi.org/10.11646/zootaxa.3522.1.6.
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This study describes Pseudolaguvia viriosa, a new miniature sisorid catfish from the Brahmaputra River drainage in Ar-unachal Pradesh, northeastern India. Pseudolaguvia viriosa can be distinguished from congeners in having a combinationof: eye diameter 10–15% HL, interorbital distance 35–38% HL, head width 21.5–23.5% SL, thoracic adhesive apparatusreaching beyond base of last pectoral-fin ray, pectoral spine length 26.9–32.9% SL, dorsal spine length 23.4–29.0% SL,dorsal spine with anterior edge smooth or with rugose surface only on distal third of spine, body depth at anus 16.9–19.0%SL, length of adipose-fin base 12.5–15.4% SL, caudal peduncle length 14.8–17.7% SL, caudal peduncle depth 7.4–9.8% SL, caudal-fin length 26.5–32.4% SL, 28–29 vertebrae, and one or more distinct pale bands encircling body.
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SINGH, PRATIMA, BASUDHARA ROY CHOWDHURY, SHANTABALA DEVI GURUMAYUM, and LAISHRAM KOSYGIN. "Glyptothorax heokheei, a new species of catfish (Teleostei: Sisoridae) from the Brahmaputra River drainage, Arunachal Pradesh, Northeast India." Zootaxa 5383, no. 1 (2023): 75–82. http://dx.doi.org/10.11646/zootaxa.5383.1.6.
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Glyptothorax heokheei, a new species of sisorid catfish is described from the Brahmaputra River drainage in India. It can be distinguished from all congeners, except G. dikrongensis, G. indicus, G. rugimentum and G. obliquimaculatus, in having the unculiferous striae of thoracic adhesive apparatus extending anteriorly onto gular region. Glyptothorax heokheei is distinguished from G. dikrongensis and G. obliquimaculatus in having a slender body at the anus, more serrations on posterior margin of pectoral-fin spine, greater number of branched anal fin rays, and the extremity of dorsoposterior margin of adipose fin uniformly convex (vs. sharply angular). It differs from G. rugimentum in having a chevron-shaped (vs. rhomboidal) thoracic adhesive apparatus, more serrations on posterior margin of pectoral-fin spine, and lacking vertical bars on body. Glyptothorax heokheei differs from G. indicus in having a shorter post-adipose distance, smaller interorbital width, more serrations on posterior margin of pectoral-fin spine and nasal barbel not reaching (vs. reaching) anterior margin of eye. Glyptothorax heokheei is the fifth species of the genus possessing unculiferous ridges of thoracic adhesive apparatus extending anteriorly onto the gular region.
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NG, HEOK HEE, and MAURICE KOTTELAT. "Pseudobagarius eustictus, a new species of catfish from northern Laos (Siluriformes: Akysidae)." Zootaxa 4996, no. 2 (2021): 322–30. http://dx.doi.org/10.11646/zootaxa.4996.2.6.
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Pseudobagarius eustictus, new species, is described from the Nam Heung drainage (a tributary of the Mekong River) in northern Laos. It is distinguished from congeners in having a unique combination of the following characters: a weakly-produced snout in which the upper jaw extends only slightly beyond the margin of the lower jaw when viewed ventrally, 3 tubercles on the posterior margin of the pectoral spine, eye diameter 8% HL, head width 24.1% SL, dark yellow dorsal and lateral surfaces of the head, pectoral spine lacking elongate extensions, pectoral fin reaching the pelvic-fin base when adpressed against the body, dorsolateral surfaces of body without longitudinal series of prominent tubercles, body depth at anus 13.7% SL, length of adipose-fin base 17.7% SL, caudal-peduncle depth 7.0% SL, and 33 vertebrae.
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CHEN, ZHONGGUANG, JIAYUN WU, and ANXIANG WEN. "Liobagrus huaiheensis, a new species of torrent catfish (Teleostei: Siluriformes: Amblycipitidae) from the Huaihe River basin in Central China." Zootaxa 4952, no. 2 (2021): 391–400. http://dx.doi.org/10.11646/zootaxa.4952.2.11.
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Liobagrus huaiheensis, a new species of catfish, is described from the Shihe River, a tributary of the Huaihe River, in Henan Province, Central China. It shares a serrated posterior edge of the pectoral-fin spine with L. marginatus, L. nigricauda, L. kingi, L. chenghaiensis, L. andersoni, L. mediadiposalis, L. obesus, L. somjinensis, and L. hyeongsanensis, but it is distinguished from these nine species by having combination of the following characters: 2–3 serrations on the posterior edge of the pectoral-fin spine; 15–17 anal-fin rays; an upper jaw longer than lower one; a rounded caudal-fin with 50–55 rays; 35–37 post-Weberian vertebrae; anus close to pelvic-fin insertion and an adipose-fin posteriorly continuous with caudal-fin, with a marked incision at confluence.
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Alcaraz, Héctor S. Vera, Weferson J. da Graça, and Oscar A. Shibatta. "Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay." Neotropical Ichthyology 6, no. 3 (2008): 425–32. http://dx.doi.org/10.1590/s1679-62252008000300016.
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Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.
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GILL, ANTHONY C., YI-KAI TEA, and HIROSHI SENOU. "Plectranthias takasei, new species of anthiadine fish from southern Japan (Teleostei: Serranidae)." Zootaxa 4205, no. 4 (2016): 349. http://dx.doi.org/10.11646/zootaxa.4205.4.3.
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Plectranthias takasei is described from two specimens collected in Izu Oceanic Park, Sagami Bay, Honshu, Japan. It is distinguished from congeners in having the following combination of characters: dorsal rays X,15; no fleshy flaps on dorsal-fin spines; pectoral rays 13, all unbranched; branched caudal-fin rays 8 + 7; lateral line scales 28 (including intermittent and terminal pitted scales); circumpeduncular scales 12; fourth dorsal-fin spine longest; and preopercle without antrorse spines or serrations ventrally, with 2–3 weak serrations or crenulations posteriorly.
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Fricke, Ronald. "Ocosia sphex, a new species of waspfish from New Hanover, Papua New Guinea (Teleostei: Tetrarogidae)." Journal of the Ocean Science Foundation 28 (August 31, 2017): 1–9. https://doi.org/10.5281/zenodo.854757.
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The tetrarogid waspfish Ocosia sphex n. sp. is described on the basis of a single specimen that was trawled from a steep rocky slope with gorgonian corals in 155–120 m depth at New Hanover, Bismarck Archipelago, Papua New Guinea. It is characterized by 14 spines and 8 soft rays in the dorsal fin, the last ray divided; 3 spines and 6 soft rays in the anal fin, the last ray divided; 13 pectoral-fin rays; 3+8=11 gill rakers (some rudimentary); 5 preopercular spines; 26–27 lateral-line scales; the second and third dorsal-fin spines not markedly elongate relative to succeeding spines; the membranes of the mid-spinous portion of the dorsal fin incised for one-fourth to one-third of length of the succeeding spine; the origin of the dorsal fin at or about the level of the middle of the eye; the first lachrymal spine about one-third the length of the second spine, pointing downward and out rather than back; and minute stubby papillae confined to the anteriormost part of premaxillary or absent. A key to the eight known species of Ocosia is presented.
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NG, HEOK HEE, and LALRAMLIANA. "Pseudolaguvia virgulata, a new sisorid catfish (Teleostei: Sisoridae) from Mizoram, northeastern India." Zootaxa 2518, no. 1 (2010): 60. http://dx.doi.org/10.11646/zootaxa.2518.1.4.
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Pseudolaguvia virgulata, a new South Asian sisorid catfish species, is described from the Barak River drainage in Mizoram, India. The new species can be distinguished from congeners in having a brown body with two or three narrow, pale longitudinal stripes and a pale Y-shaped marking on the dorsal surface of the head. Additional distinguishing characters from its congeners are a serrated anterior edge of the dorsal spine, the thoracic adhesive apparatus reaching beyond the base of the last pectoral-fin ray, head width, pectoral-fin length, length of dorsal-fin base, dorsal-spine length, body depth at anus, length of adipose-fin base, caudal peduncle length, caudal peduncle depth, snout length, interorbital distance, and total number of vertebrae.
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IDREES, BABU K.K., and K.V. AKHILESH. "Epigonus indicus, a new species of deepwater cardinalfish (Perciformes: Epigonidae) from the Indian Ocean." Journal of the Ocean Science Foundation, no. 36 (November 5, 2020): 20–27. https://doi.org/10.5281/zenodo.4243312.
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A new species of deepwater cardinalfish, <em>Epigonus indicus</em>, is described from two specimens, 105.2 and 100.2 mm SL, from Kavaratti Island, Lakshadweep (Laccadive) Sea, India. The specimens were collected from storage tanks at a desalination plant where seawater was piped up from 350–400 m depths. Diagnostic features distinguishing the new species from congeners include no pungent opercular spines, no maxillary mustache-like process, no projections on the symphysis of the lower jaw, ribs absent on the last abdominal vertebra, no isolated dorsal-fin spine between the first and second dorsal fins, gill rakers 26–27, pectoral-fin rays 15–17, pectoral-fin length about 22–23% SL, and body depth about 28–29% SL.
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LIM, PEK KHIOK ANNIE, HIROYUKI MOTOMURA, and ALBERT CHUAN GAMBANG. "Polydactylus luparensis, a new species of threadfin (Perciformes: Polynemidae) from the Batang Lupar River, Sarawak, Borneo, Malaysia." Zootaxa 2405, no. 1 (2010): 63. http://dx.doi.org/10.11646/zootaxa.2405.1.4.
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A new species of large-sized brackishwater threadfin, Polydactylus luparensis, is described from the Batang Lupar River in Sarawak, Malaysia, Borneo on the basis of 5 specimens (610–715 mm standard length). The new species can be distinguished from all other Polydactylus by having 8 dorsal-fin spines, first spine tiny, second spine very strong (its width more than 5 times the width of remaining spines); 13 second dorsal-fin soft rays; 11 anal-fin soft rays; 12 pectoralfin rays, its length 22–24% (mean 23%) of SL, posterior tip not reaching a vertical through posterior tip of depressed pelvic fin; 6 pectoral filaments, fourth or fifth filament longest, its length 77–85% (mean 81%) of SL, posterior tip extending slightly beyond caudal-fin base; pored lateral-lined scales 67–75 (mean 71); lateral line unbranched, extending onto upper end of lower caudal-fin lobe; 6 scale rows above lateral line, 8 below; 14 gill rakers on upper limb, 18 on lower limb, 32 in total; occipital profile concave; posterior margin of maxilla extending considerably beyond a vertical through posterior margin of adipose eyelid; depth of posterior margin of maxilla 4–5% (mean 5%) of SL, greater than orbit diameter; well-developed swimbladder present; basal half of third to sixth pectoral filament white, becoming black distally. Polydactylus luparensis is currently known only from the mouth of the Batang Lupar River.
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WHITE, WILLIAM T., and DHARMADI. "Giganthias serratospinosus, a new serranid (Perciformes: Serranidae: Anthiinae) from the island of Lombok in Indonesia." Zootaxa 3161, no. 1 (2012): 60. http://dx.doi.org/10.11646/zootaxa.3161.1.6.
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A new species of anthiine fish (Serranidae) belonging to the genus Giganthias from southeastern Indonesia is described.This is the second species recorded for this genus and the first record of this genus in Indonesian waters. The new species,Giganthias serratospinosus, is clearly separable from the other member of the genus, G. immaculatus, in morphometricsand meristics. The key characteristics of this species include: first to fourth dorsal-fin spines and pelvic-fin spine with expanded, coarsely serrated tips; pectoral-fin rays 13–14, soft dorsal-fin rays 12.
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WU, QIANQIAN, XUEJIAN DENG, YANJIE WANG, and YONG LIU. "Rhinogobius maculagenys, A new species of freshwater goby (Teleostei: Gobiidae) from Hunan, China." Zootaxa 4476, no. 1 (2018): 118. http://dx.doi.org/10.11646/zootaxa.4476.1.11.
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A new freshwater goby, Rhinogobius maculagenys sp. nov., was collected from Hunan Province in Southern China. This species can be distinguished from all congeners by a combination of the following features: first dorsal fin with 6 spines; second dorsal fin with a single spine and 7–9 segmented rays; anal fin with a single spine and 6–8 segmented rays; pectoral fin with 16 segmented rays; 32–34 longitudinal scales; 9–13 transverse scales; 11+16=27 vertebrae; pore ω1 missing; head and body yellowish brown; cheek and opercle yellowish brown with over 30 small orange spots, branchiostegal membrane yellow with over 10 small orange spots in males and white and spotless in females; first dorsal fin trapezoidal in males and nearly semicircular in females, with large bright blue blotch in front of second spine; spines 4 and 5 longest, rear tip extending to base of second branched ray of second dorsal fin in males when adpressed, but just reaching or not reaching anterior margin of second dorsal fin in females; caudal fin with 5–6 vertical rows of brown spots; flank with several longitudinal rows of blackish-brown spots; and belly pale white.
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LAST, PETER R., GORDON K. YEARSLEY, and HIROYUKI MOTOMURA. "Lioscorpius trifasciatus, a new scorpionfish (Scorpaeniformes: Setarchidae) from the South-West Pacific Ocean." Zootaxa 1038, no. 1 (2005): 11. http://dx.doi.org/10.11646/zootaxa.1038.1.2.
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A new scorpionfish, Lioscorpius trifasciatus sp. nov., is described from material collected from the eastern Australian continental slope between Hinchinbrook Island (central Queensland) and Port Jackson (New South Wales) in 250–400 m depth. It differs from the only other member of the genus, the widely distributed Indo–West Pacific congener, L. longiceps Günther, in having the following combination of characters: 3 anal-fin spines (rather than 2), smaller head dimensions (i.e. length 38.7–42.3% SL, orbit 7.4–8.2% SL, upper jaw 19.1–20.7% SL, and maxilla depth 5.3–6.1% SL), shorter predorsal distance (36.2–38.8% SL), some relatively long fin elements (i.e. longest pelvic-fin ray 18.6–19.8% SL, first anal-fin spine 5.0–6.6% SL, and second anal-fin spine 10.4–12.7% SL), 3 diagonal red bands across the pectoral fin, and a red caudal-fin margin.
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TANG, CHI-NGAI, NOK-WAI LAI, and HSUAN-CHING HO. "Plectranthias purpuralepis sp. nov., a new anthiadine perchlet from northern Taiwan (Perciformes: Serranidae)." Zootaxa 4780, no. 3 (2020): 508–22. http://dx.doi.org/10.11646/zootaxa.4780.3.4.
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A new species of Plectranthias Bleeker is described on the basis of 16 specimens collected from northern Taiwan. The new species, Plectranthias purpuralepis sp. nov. can be distinguished from its congeners in having pectoral and pelvic fins mostly covered with small scales, some white scales on dorsum turn purple when preserved, and the following combination of characters: dorsal-fin elements X, 16–17; 3rd dorsal-fin spine longest; pectoral-fin rays 14, all branched except for uppermost simple ray; principal caudal-fin rays 9+8; pored lateral-line scales 33–36; 6 diagonal rows of large scales on cheek; circumpeduncular scales 14; ca. 7 rows of large predorsal scales, 2 irregular rows of small scales extending to a line through posterior nostrils; no scales on maxilla and chin; posterior margin of preopercle serrated, ventral margin with 2 antrorse spines; and the greatest body depth 2.9–3.0 in SL.
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Fricke, Ronald. "Callionymus petersi, a new species of dragonet from New Ireland, Papua New Guinea, western Pacific Ocean (Teleostei: Callionymidae)." Journal of the Ocean Science Foundation 21 (May 29, 2016): 38–57. https://doi.org/10.5281/zenodo.53743.
Full textAbstract:
A new species of dragonet, Callionymus petersi from northern New Ireland Province, Papua New Guinea, is described on the basis of five specimens collected with dredges and trawls in about 181–207 m depth from off northwestern New Hanover and off Kavieng. The new species is characterized within the subgenus Bathycallionymus by a short head (3.9–4.3 in SL); eye large (2.1–2.3 in head length); preopercular spine with a long, slightly upcurved main tip, a small antrorse serra followed by two large curved points on its dorsal margin and a strong antrorse spine at its base, ventral margin smooth, slightly concave; first dorsal fin higher than second dorsal fin in the male, slightly lower than second dorsal fin (female), with 4 spines, first spine filamentous (male only); second dorsal-fin high, distally convex (male) or low, distally nearly straight (female), with 9 unbranched rays (last divided at base); anal fin with 9 unbranched rays (last divided at base); 18 pectoral-fin rays; caudal fin elongate (male), the two median rays unbranched, elongate but barely filamentous (male), or distally rounded, without filaments (female); pectoral-fin base with a large dark blotch; sides of body with a series of dark blotches, each of the anterior blotches broken into 2–4 vertical dark streaks; first dorsal fin with a large ocellated black blotch extending over the second and third membranes (male), or mostly confined to the third membrane (female); second dorsal fin pale (male) or spotted with grey; anal fin distally dark (male), with distal dark spots (female); caudal fin with a grey streak in lower section (male), or lowermost membrane black (female). The new species is compared with similar species. Revised keys to callionymid fish species of New Guinea, as well as of the subgenus Bathycallionymus, are presented.
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HO, HSUAN-CHING, HIROYUKI MOTOMURA, HARUTAKA HATA, and WEI-CHUAN JIANG. "Review of the fish genus Epinnula Poey (Perciformes: Gempylidae), with description of a new species from the Pacific Ocean." Zootaxa 4363, no. 3 (2017): 393. http://dx.doi.org/10.11646/zootaxa.4363.3.5.
Full textAbstract:
The gempylid fish genus Epinnula is reviewed and two species are recognized. The type species E. magistralis is considered restricted to the western Atlantic Ocean and a new species from the Pacific Ocean is described. The new species, Epinnula pacifica sp. nov., can be distinguished from E. magistralis by 17 or 18 dorsal-fin rays (vs. 15 or 16 in E. magistralis), 15 or 16 anal-fin rays (vs. 13 or 14), 247–268 total scales on lower lateral line (vs. 285–330), a deeper body, relatively high dorsal fin as reflected by the relatively long fin spines and rays, longer dorsal-fin and anal-fin bases, longer pectoral fin, and longer pelvic fin and pelvic spine.
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P. Shah, Niharika, N. C. Ujjania, and Aakash B. Pardeshi. "Morphometric and Meristic characteristics description of stripped catfish (Pangasianodon hypophthalmus, Sauvage 1878) culture in south Gujarat, India." Ecology, Environment and Conservation 30, SUPPL (2024): S451—S456. http://dx.doi.org/10.53550/eec.2024.v30i03s.079.
Full textAbstract:
The present study was conducted to understand the morphometric and Meristic characteristics of stripped catfish (Pangasianodon hypophthalmus, Sauvage 1878) culture in south Gujarat. For the morphometric measurement and Meristic count total 815 fish specimens were randomly collected from the described culture systems. For the morphometric measurements of the fish, total length (TL), standard length (SL) and body weight were taken. Meristic counts were included to count number of spine and rays for dorsal fin, pectoral fin, pelvic fin, anal fin and caudal fin. In present study, morphometric observation including total length (TL) 18.500-48.00 cm with mean 34.760±0.185, standard length (SL) 16.500-39.000 cm with mean 28.791±0.154 and weight (WT) 100.00-930.00 g with mean 376.720±5.615 was observed in studied fish. The morphometric relationship of the variables (TL vs WT, SL vs WT and TL vs SL) shows the linear relationship among the variables respectively. The values of intercept (a = -1.882, -1.546 & -0.024), correlation coefficient (r = 0.820, 0.816 & 0.910) and growth constant (b = 2.832, 2.802 & 0.962) were noted respectively. The Meristic characteristics of the studied fish were counted as dorsal fin spine and rays (1/6), Pectoral fin spine and rays (1/9), Pelvic fin spine and rays (1/7) and anal fin rays (29-30). It is very much essential to record the morphological and meristic characters of the studied fish for identification. All such information can also be considered an initial step for studying evolutionary relationships of fish species.
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Ottoni, Felipe, Antônio Q. Lezama, Mauro L. Triques, Evelise N. Fragoso-Moura, Cínthia C. T. Lucas, and Francisco A. R. Barbosa. "Australoheros perdi, new species (Teleostei: Labroidei: Cichlidae) from the lacustrine region of the Doce River Valley, southeastern Brazil, with biological information." Vertebrate Zoology 61, no. 1 (2011): 137–54. http://dx.doi.org/10.3897/vz.61.e31145.
Full textAbstract:
Australoheros perdi is a new species herein described from the lacustrine region of the middle Doce River basin, Doce River Valley, southeastern Brazil. The new species is distinguished from all its congeners by having only 25 vertebrae and by a combination of characters states listed below: three abdominal bars in all stages of life, a conspicuous, rounded caudalfin base spot, a conspicuous wide longitudinal stripe, head with depression in the region above the eyes, tip of pelvic fin reaching vertical through third to sixth anal fin spine base, fewer dorsal-fin spines, fewer pectoral-fin rays, fewer caudal vertebrae, fewer proximal radials on dorsal-fin base, more proximal radials on anal-fin base, more pleural ribs, a longer caudal peduncle, a deeper caudal peduncle, a wide ectopterygoid, a longer last anal-fin spine and a longer lower jaw. The available phylogenetic tree of the genus does not include the species from southeastern Brazil, thus impeding any discussion of the phylogeny of these species.
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Ottoni, Felipe, ANTÔNIO Lezama, Mauro Triques, EVELISE Fragoso-Moura, CÍNTHIA C. T. Lucas, and FRANCISCO A. R. Barbosa. "Australoheros perdi, new species (Teleostei: Labroidei: Cichlidae) from the lacustrine region of the Doce River Valley, southeastern Brazil, with biological information." Vertebrate Zoology 61 (June 22, 2011): 137–54. https://doi.org/10.3897/vz.61.e31145.
Full textAbstract:
Australoheros perdi is a new species herein described from the lacustrine region of the middle Doce River basin, Doce River Valley, southeastern Brazil. The new species is distinguished from all its congeners by having only 25 vertebrae and by a combination of characters states listed below: three abdominal bars in all stages of life, a conspicuous, rounded caudalfin base spot, a conspicuous wide longitudinal stripe, head with depression in the region above the eyes, tip of pelvic fin reaching vertical through third to sixth anal fin spine base, fewer dorsal-fin spines, fewer pectoral-fin rays, fewer caudal vertebrae, fewer proximal radials on dorsal-fin base, more proximal radials on anal-fin base, more pleural ribs, a longer caudal peduncle, a deeper caudal peduncle, a wide ectopterygoid, a longer last anal-fin spine and a longer lower jaw. The available phylogenetic tree of the genus does not include the species from southeastern Brazil, thus impeding any discussion of the phylogeny of these species.
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Kubicek, Kole M., Ralf Britz, and Kevin W. Conway. "Ontogeny of the catfish pectoral-fin spine (Teleostei: Siluriformes)." Journal of Morphology 280, no. 3 (2019): 339–59. http://dx.doi.org/10.1002/jmor.20947.
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Shepherd, Bart, Tyler Phelps, Hudson T. Pinheiro, Alejandro Pérez-Matus, and Luiz A. Rocha. "Plectranthias ahiahiata, a new species of perchlet from a mesophotic ecosystem at Rapa Nui (Easter Island) (Teleostei, Serranidae, Anthiadinae)." ZooKeys 762 (May 31, 2018): 105–16. http://dx.doi.org/10.3897/zookeys.762.24618.
Full textAbstract:
A new species of the perchlet genus Plectranthias is herein described from a single specimen found at Rapa Nui (Easter Island) in the South Pacific. Plectranthiasahiahiata sp. n. was collected at a depth of 83 m in a mesophotic coral ecosystem at Rapa Nui. The main difference between Plectranthiasahiahiata and other members of the genus is higher fin-ray counts (X, 18 dorsal; 18 pectoral) and its distinctive coloration. Compared to the three other known eastern South Pacific species, P.ahiahiata has more dorsal-fin rays, more pectoral-fin rays, fewer tubed lateral-line scales, fewer gill rakers, a longer head relative to SL, a very short first dorsal spine relative to SL, and a short third anal spine relative to SL. Plectranthiasahiahiata is distinguished from western Pacific species, by having more dorsal- and pectoral-fin rays. The closest relative based on genetic divergence (with 12.3% uncorrected divergence in the mitochondrial COI gene) is Plectranthiaswinniensis, a widely distributed species, suggesting important links between Rapa Nui and western Pacific islands. This new species adds to the high endemism of the Rapa Nui ichthyofauna, and is further evidence of the importance of mesophotic reefs as unique communities.
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Shepherd, Bart, Tyler Phelps, Hudson T. Pinheiro, Alejandro Pérez-Matus, and Luiz A. Rocha. "Plectranthias ahiahiata, a new species of perchlet from a mesophotic ecosystem at Rapa Nui (Easter Island) (Teleostei, Serranidae, Anthiadinae)." ZooKeys 762 (May 31, 2018): 105–16. https://doi.org/10.3897/zookeys.762.24618.
Full textAbstract:
A new species of the perchlet genus Plectranthias is herein described from a single specimen found at Rapa Nui (Easter Island) in the South Pacific. Plectranthias ahiahiata sp. n. was collected at a depth of 83 m in a mesophotic coral ecosystem at Rapa Nui. The main difference between Plectranthias ahiahiata and other members of the genus is higher fin-ray counts (X, 18 dorsal; 18 pectoral) and its distinctive coloration. Compared to the three other known eastern South Pacific species, P. ahiahiata has more dorsal-fin rays, more pectoral-fin rays, fewer tubed lateral-line scales, fewer gill rakers, a longer head relative to SL, a very short first dorsal spine relative to SL, and a short third anal spine relative to SL. Plectranthias ahiahiata is distinguished from western Pacific species, by having more dorsal- and pectoral-fin rays. The closest relative based on genetic divergence (with 12.3% uncorrected divergence in the mitochondrial COI gene) is Plectranthias winniensis, a widely distributed species, suggesting important links between Rapa Nui and western Pacific islands. This new species adds to the high endemism of the Rapa Nui ichthyofauna, and is further evidence of the importance of mesophotic reefs as unique communities.
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LIM, KELVIN K. P., and HEOK HEE NG. "Pseudomystus heokhuii, a new species of bagrid catfish from Sumatra (Teleostei: Bagridae)." Zootaxa 1686, no. 1 (2008): 37. http://dx.doi.org/10.11646/zootaxa.1686.1.3.
Full textAbstract:
Pseudomystus heokhuii, a new species of bagrid catfish is described from highly acidic blackwater habitats in central Sumatra. The new species can be distinguished from congeners by its unique color pattern of a pale midlateral stripe and pale oblique bands on the sides of the body. It is most similar to, and can be found sympatrically with, P. leiacanthus, but can be further distinguished from it in having two (vs. one) dark narrow irregular bars on the caudal fin, longer pectoral spine (19.3–22.4% SL vs. 15.2–18.6), longer caudal fin (33.5–40.0% SL vs. 25.7–31.9) with pointed (vs. rounded) lobes, longer nasal and maxillary barbels (63.1–81.1% HL vs. 31.3–51.5 and 86.2–125.3% HL vs. 70.9–91.3 respectively; nasal barbel reaching to dorsal insertion of opercular flap vs. to just beyond posterior orbital margin and maxillary barbel reaching just beyond base of last pectoral-fin ray vs. to base of pectoral spine), a straight (vs. crescentic) premaxillary tooth patch, a more sharply tapering snout when viewed dorsally, and an even (vs. slightly convex) predorsal profile.