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Journal articles on the topic 'Caudal peduncle with tubercles'

Author: Grafiati

Published: 7 June 2025

Last updated: 16 July 2025

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1

NG, HEOK HEE, and WALTER J. RAINBOTH. "Glyptothorax coracinus, a new species of hillstream catfish from Cambodia (Teleostei: Sisoridae)." Zootaxa 1839, no. 1 (2008): 60. http://dx.doi.org/10.11646/zootaxa.1839.1.3.

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Glyptothorax coracinus sp. nov. is described from the western face of the Krâvanh (Cardamom) Mountains and Dâmrei (Elephant) Mountains in southwestern Cambodia. It can be distinguished from congeners by its color pattern consisting of blackish brown body with indistinct pale longitudinal stripes on the lateral line and mid-dorsal regions of the body, pale markings on the nuchal plate absent, length of adipose-fin base 12.3–14.5% SL, length of caudal peduncle 18.6– 21.0% SL, depth of caudal peduncle 7.9–9.4% SL, body depth at anus 11.0–14.6% SL, eye diameter 6.3–7.2% HL, 36– 37 vertebrae, tuber

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2

NG, HEOK HEE. "Glyptothorax botius (Hamilton, 1822), a valid species of catfish (Teleostei: Sisoridae) from northeast India, with notes on the identity of G. telchitta (Hamilton, 1822)." Zootaxa 930, no. 1 (2005): 1. http://dx.doi.org/10.11646/zootaxa.930.1.1.

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Glyptothorax botius is revalidated from synonymy with G. telchitta. Both G. botius and G. telchitta are known from the Ganges River drainage in northeast India, and differ from congeners in the region in having a combination of large, prominent tubercles on the head and body, a thoracic adhesive apparatus without a median depression, and a very slender body and caudal peduncle. Glyptothorax botius was previously considered a synonym of G. telchitta, but differs from it in having a more rounded snout when viewed laterally, the presence (vs. absence) of dark saddles on the body, a thoracic adhes

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3

Liu, Mei, Jian-Bing Lyu, Li-Na Du, and Xiao-Yong Chen. "Description of a new loach species, Yunnanilus triangulus sp. nov. (Cypriniformes, Nemacheilidae), from Yunnan, China." Zoosystematics and Evolution 101, no. (2) (2025): 465–71. https://doi.org/10.3897/zse.101.136965.

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A new species of the genus <i>Yunnanilus</i>, designated <i>Yunnanilus triangulus</i> sp. nov., is described from the Nanpan River in Yunnan Province, southwestern China. Nuptial males of this species are distinguished by the presence of tubercles on the caudal peduncle during the reproductive period, a feature not observed in other members of the genus. The new species is further characterized by the following unique combination of morphological characters: body scaled, smaller eyes than interorbital width, nine inner gill rakers on first gill arch, lateral head length 27.1%–30.9% SL, head wi

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4

Liu, Mei, Jian-Bing Lyu, Li-Na Du, and Xiao-Yong Chen. "Description of a new loach species, Yunnanilus triangulus sp. nov. (Cypriniformes, Nemacheilidae), from Yunnan, China." Zoosystematics and Evolution 101, no. 2 (2025): 465–71. https://doi.org/10.3897/zse.101.136965.

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A new species of the genus Yunnanilus, designated Yunnanilus triangulussp. nov., is described from the Nanpan River in Yunnan Province, southwestern China. Nuptial males of this species are distinguished by the presence of tubercles on the caudal peduncle during the reproductive period, a feature not observed in other members of the genus. The new species is further characterized by the following unique combination of morphological characters: body scaled, smaller eyes than interorbital width, nine inner gill rakers on first gill arch, lateral head length 27.1%–30.9% SL, head width 14.3%–17.2%

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5

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 ad

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6

PROTOGINO, LUCILA C., AMALIA M. MIQUELARENA, and HUGO L. LÓPEZ. "A new species of Astyanax (Teleostei, Characiformes, Characidae), with breeding tubercles, from the Paraná and Uruguay river basins." Zootaxa 1297, no. 1 (2006): 1. http://dx.doi.org/10.11646/zootaxa.1297.1.1.

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A new species of Astyanax, which is unusual in having breeding tubercles in mature males, is described from the Paraná and Uruguay river basins. The new species is distinguished from all other members of the genus by this feature, together with the following unique combination of characters: a round or trapezoidal humeral spot; a branch of the infraorbital sensory canal directed ventrally, continued as a series of pores totally or partially traversing the third infraorbital; body relatively slender (31.8–37.4 %SL); eye large (41.1–45.8 %HL); snout short (15.5–20.9 %HL); caudal peduncle relativ

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7

MARNGAR, IBANSIEWDOR, BATNGENLANG MAWLONG, and YUMNAM LOKESHWOR. "Garra dohjei, a new species of labeonine fish (Teleostei: Cyprinidae) from Meghalaya, India." Zootaxa 5507, no. 3 (2024): 478–88. http://dx.doi.org/10.11646/zootaxa.5507.3.6.

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Garra dohjei, a new labeonine fish with transverse lobe and incipient proboscis is described from the Ñiangdai, a tributary of the Brahmaputra River, Meghalaya, India. The new species is distinguished from its congeners with transverse lobe and incipient proboscis, in having a well-developed transverse lobe with around 9–12 minute tubercles, deep transverse groove between transverse lobe and incipient proboscis, black spot immediately anterior to upper angle of gill opening, 5–6 dark black stripes on caudal peduncle, 33–35 lateral line scales, 9–10 predorsal scales, 16–circumpeduncular scales,

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8

TENALI, DIAMOND RAJAKUMAR, BUNGDON SHANGNINGAM, PAMPA BHATTACHARJEE, ARUN BHAI PATEL, and LAISHRAM KOSYGIN. "Garra zubzaensis, a new fish species (Cyprinidae: Labeoninae) from the Brahmaputra River basin, Nagaland, North-Eastern India." Zootaxa 5512, no. 4 (2024): 579–89. http://dx.doi.org/10.11646/zootaxa.5512.4.7.

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A new species of Garra (Labeoninae) is described from the Zubza River, a headwater of the Brahmaputra River basin, in Kohima district of Nagaland, North-eastern India. The new species is distinguished by the following combination of characters: a black spot located on the principal ray and first three branched rays of the dorsal (upper) lobe distal part, as well as a black submarginal V-shaped band on the principal ray and whole branched rays of the ventral (lower) lobe of caudal fin; snout with weakly-developed proboscis represented by slightly upwards elevated hump, with no transverse groove

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9

NG, HEOK HEE, WAN-SHENG JIANG, and XIAO-YONG CHEN. "Glyptothorax lanceatus, a new species of sisorid catfish (Teleostei: Siluriformes) from southwestern China." Zootaxa 3250, no. 1 (2012): 54. http://dx.doi.org/10.11646/zootaxa.3250.1.4.

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Glyptothorax lanceatus, a new species of sisorid catfish from the upper Salween River drainage in southwestern China,is described. It can be distinguished from congeners in having the following combination of characters: length of nasalbarbel 18.1–21.5% HL; length of maxillary barbel 86.2–91.1% HL; length of inner mandibular barbel 23.8–28.2% HL;length of outer mandibular barbel 42.8–49.1% HL; eye diameter 6.8–8.3% HL; interorbital distance 20.2–22.1% HL;elongate, ovoid tubercles on dorsal surface of head; head length 23.0–25.1% SL; head width 16.3–18.8% SL; width ofadhesive apparatus 1.60–1.7

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10

NG, HEOK HEE, and HEOK HUI TAN. "Pseudomystus tuberosus, a new species of catfish from central Borneo (Actinopterygii: Bagridae)." Zootaxa 5496, no. 4 (2024): 546–54. http://dx.doi.org/10.11646/zootaxa.5496.4.4.

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Pseudomystus tuberosus, a new species of bagrid catfish from the Kahayan River drainage in south central Borneo, is described in this study. It can be distinguished from all congeners in having a strongly humped dorsal profile (vs. dorsal profile weakly humped or without hump), as well as its head and flanks covered with rounded tubercles (vs. smooth or with capillaceous epithelial projections). Pseudomystus tuberosus most closely resembles P. vaillantii, but can be further distinguished from it in having a smaller eye (8% HL vs. 9–12) and a slenderer caudal peduncle (5.5–6.0% SL vs. 6.8–8.1).

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11

Boldyrev, V. S., and N. G. Bogutskaya. "Description of two new species of tadpole-gobies (Teleostei: Gobiidae: Benthophilus)." Zoosystematica Rossica 13, no. 1 (2004): 129–35. http://dx.doi.org/10.31610/zsr/2004.13.1.129.

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Benthophilus durrelli and B. ragimovi, two new species of tadpole-gobies, are described. Both belong to an assemblage of Benthophilus species with clearly differentiated dermal ossifications. B. durrelli inhabits estuarine regions, deltas, lower reaches of rivers, and dam lakes in the Sea of Azov basin and is introduced in the Volga. It was hitherto not distinguished from the Azov tadpole-goby, B. stellatus, from which it differs in the posterior position of the second dorsal fin (behind vs. in front of the anal-fin origin), comparatively small (vs. considerable) difference in size of tubercle

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12

Remya L. Sundar, V.K. Anoop, Arya Sidharthan, Neelesh Dahanukar, and Rajeev Raghavan. "The identity and distribution of Bhavania annandalei Hora, 1920 (Cypriniformes: Balitoridae), a hillstream loach endemic to the Western Ghats of India." Journal of Threatened Taxa 12, no. 10 (2020): 16262–71. http://dx.doi.org/10.11609/jott.6040.12.10.16262-16271.

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Bhavania annandalei Hora 1920, is resurrected from the synonymy of B. australis (Jerdon, 1849) based on examination of freshly collected topotypic specimens. The two species can be distinguished by a combination of morphological characters including low, dense, and sparsely distributed tubercles on dorsal surface of head and operculum, rostral barbels reaching anterior border of upper lip, rostral flaps between the rostral barbels fleshier, 11–12 scale rows above the lateral line, and caudal peduncle stout with its depth to width ratio less than 2.5. The two species formed significantly distin

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13

Peng, Xin, Jia-Jun Zhou, Hong-Di Gao, and Jin-Quan Yang. "A new species of Opsariichthys (Teleostei, Cypriniformes, Xenocyprididae) from Southeast China." ZooKeys 1214 (October 1, 2024): 15–34. http://dx.doi.org/10.3897/zookeys.1214.127532.

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Opsariichthys iridescenssp. nov. is described from the Qiantang and Oujiang rivers in Zhejiang Province and a tributary of the Yangtze River adjacent to the Qiantang River. It is distinguished from congeners by the following combination of morphological features: no obvious anterior notch on the tip of the upper lip; 45–52 lateral-line scales; 18–21 pre-dorsal scales; two rows of pharyngeal teeth; a maxillary extending to or slightly beyond the vertical anterior margin of the orbit in adult males; a pectoral fin extending to the pelvic fin in adult males; nuptial tubercles on the cheeks and lo

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14

Peng, Xin, Jia-Jun Zhou, Hong-Di Gao, and Jin-Quan Yang. "A new species of Opsariichthys (Teleostei, Cypriniformes, Xenocyprididae) from Southeast China." ZooKeys 1214 (October 1, 2024): 15–34. https://doi.org/10.3897/zookeys.1214.127532.

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<i>Opsariichthys iridescens</i> sp. nov. is described from the Qiantang and Oujiang rivers in Zhejiang Province and a tributary of the Yangtze River adjacent to the Qiantang River. It is distinguished from congeners by the following combination of morphological features: no obvious anterior notch on the tip of the upper lip; 45–52 lateral-line scales; 18–21 pre-dorsal scales; two rows of pharyngeal teeth; a maxillary extending to or slightly beyond the vertical anterior margin of the orbit in adult males; a pectoral fin extending to the pelvic fin in adult males; nuptial tubercles on the cheek

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15

CARNEVALE, GIORGIO, and THEODORE W. PIETSCH. "Batfishes from the Eocene of Monte Bolca." Geological Magazine 148, no. 3 (2010): 461–72. http://dx.doi.org/10.1017/s0016756810000907.

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AbstractBatfishes of the family Ogcocephalidae are derived lophiiform fishes characterized by having a dorsoventrally depressed body and a distinctive series of morphological features. A new genus and species of batfish, Tarkus squirei gen. et sp. nov., is described from the Eocene (Ypresian) limestone of the celebrated locality of Monte Bolca, Italy. It is based on five well-preserved specimens that display a unique combination of characters (body moderately depressed; disk rounded in outline; caudal peduncle thick and stout; frontals with median groove for the illicium; teeth present on jaws

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16

Valdesalici, Stefano, and Stefan van der Voort. "Four new species of the Indo-Burmese genus Badis from West Bengal, India (Actinopterygii: Perciformes: Badidae)." Zootaxa 3985, no. 3 (2015): 391–408. http://dx.doi.org/10.11646/zootaxa.3985.3.4.

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Four new species of Badis are described from West Bengal, India. Badis andrewraoi, new species, is diagnosed by a combination of characters which include absence of a black caudal-fin margin, absence of a conspicuous dark blotch on pectoral-fin base, absence of cleithral and opercular blotches, absence of a blotch on the dorsolateral aspect of the caudal peduncle, absence of an ocellus on the caudal-fin base, presence of a conspicuous median black caudal peduncle blotch, a medially broader posterior-most bar, displaying as a partially absorbed second median caudal peduncle blotch, presence of

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17

NG, HEOK HEE. "Two new glyptosternine catfishes (Teleostei: Sisoridae) from Vietnam and China." Zootaxa 428, no. 1 (2004): 1. http://dx.doi.org/10.11646/zootaxa.428.1.1.

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Pareuchiloglanis macropterus new species, is described from the Salween River (Nujiang) and Irrawaddy River drainages in southern China, and P. rhabdurus new species, is described from the Red River (Song Hong) drainage in northern Vietnam. Pareuchiloglanis macropterus can be distinguished from congeners by the following unique combination of characters: prepelvic length 37.0 42.2% SL; length of adipose-fin base 31.8 37.0% SL (dorsal-fin base 3.3 3.5 times in adipose-fin base); caudal peduncle length 17.6 20.0% SL; caudal peduncle depth 6.8 7.4% SL (2.4 3.0 times in caudal peduncle length); bo

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18

Wood Jr, Perry Lee, L. Lee Grismer, Anchalee Aowphol, et al. "Three new karst-dwellingCnemaspisStrauch, 1887 (Squamata; Gekkoniade) from Peninsular Thailand and the phylogenetic placement ofC. punctatonuchalisandC. vandeventeri." PeerJ 5 (January 24, 2017): e2884. http://dx.doi.org/10.7717/peerj.2884.

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Three new species of Rock GeckosCnemaspis lineogularissp. nov.,C. phangngaensissp. nov., andC. thachanaensissp. nov. of thechanthaburiensisandsiamensisgroups are described from the Thai portion of the Thai-Malay Peninsula. These new species are distinguished from all other species in their two respective groups based on a unique combination of morphological characteristics, which is further supported by mitochondrial DNA (mtDNA) from the NADH dehydrogenase subunit 2 gene (ND2).Cnemaspis lineogularissp. nov. is differentiated from all other species in thechanthaburiensisgroup by having a smalle

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Rujirawan, Attapol, Akrachai Aksornneam, Siriporn Yodthong, Parinya Pawangkhanant, Bryan L. Stuart, and Anchalee Aowphol. "Another new karst-dwelling rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand." ZooKeys 1226 (February 6, 2025): 1–24. https://doi.org/10.3897/zookeys.1226.138464.

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A new species of the Cnemaspis siamensis group is described from Wang Khrachae District, Kanchanaburi Province, western Thailand based on morphological and molecular data. The new species, Cnemaspis enneaporus Rujirawan, Aksornneam & Aowphol, sp. nov., is distinguished from other species in the C. siamensis group by having the combination of SVL 42.2 mm in adult male (n = 1), 43.7 mm in adult female (n = 1); eight supralabials; seven or eight infralabials; ventral scales smooth; nine continuous precloacal pores in male; 17 or 18 paravertebral tubercles linearly arranged; tubercles on lower

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Rujirawan, Attapol, Siriporn Yodthong, Natee Ampai, et al. "A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand." Zoosystematics and Evolution 98, no. 2 (2022): 345–63. http://dx.doi.org/10.3897/zse.98.89591.

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We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralissp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic divergences of 12.12–27.92% from all other species in the C. siamensis group. The new species is also distinguished from other species in the C. siamensis group by having the combination of sno

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Rujirawan, Attapol, Siriporn Yodthong, Natee Ampai, et al. "A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand." Zoosystematics and Evolution 98, no. (2) (2022): 345–63. https://doi.org/10.3897/zse.98.89591.

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We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralis sp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic divergences of 12.12–27.92% from all other species in the C. siamensis group. The new species is also distinguished from other species in the C. siamensis group by having the combination of sn

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22

Rujirawan, Attapol, Akrachai Aksornneam, Siriporn Yodthong, Parinya Pawangkhanant, Bryan L. Stuart, and Anchalee Aowphol. "Another new karst-dwelling rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand." ZooKeys 1226 (February 6, 2025): 1–24. https://doi.org/10.3897/zookeys.1226.138464.

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A new species of the <i>Cnemaspis siamensis</i> group is described from Wang Khrachae District, Kanchanaburi Province, western Thailand based on morphological and molecular data. The new species, <i>Cnemaspis enneaporus</i> Rujirawan, Aksornneam & Aowphol, sp. nov., is distinguished from other species in the <i>C. siamensis</i> group by having the combination of SVL 42.2 mm in adult male (<i>n</i> = 1), 43.7 mm in adult female (<i>n</i> = 1); eight supralabials; seven or eight infralabials; ventral scales smooth; nine continuous precloacal pores in male; 17 or 18 paravertebral tubercles li

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23

YANG, JIAN, XIAOYONG CHEN, and JUNXING YANG. "A new species of Metahomaloptera (Teleostei: Balitoridae) from China." Zootaxa 1526, no. 1 (2007): 63–68. http://dx.doi.org/10.11646/zootaxa.1526.1.4.

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A new species of Metahomaloptera, M. longicauda, is described from the lower Jinsha River, China. The new species is distinguished from other species of Metahomaloptera by the following combination of characters: pectoral fin with 11– 15 branched rays, tip of pectoral fin extending beyond origin of dorsal fin, pelvic fin with 10–12 branched rays, pelvicfin tip reaching or extending beyond anus, dorsal fin inserting before middle of body, tip of dorsal fin far from vertical line of caudal-fin base, head width 19.4–22.6% SL, pre-pectoral length 8.4–9.9% SL, pre-anal length 69.0–74.3% SL, caudal

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NG, HEOK HEE. "Exostoma ericinum, a new glyptosternine catfish from southwestern China (Teleostei: Siluriformes: Sisoridae)." Zootaxa 4420, no. 3 (2018): 405. http://dx.doi.org/10.11646/zootaxa.4420.3.6.

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A new species of glyptosternine catfish in the genus Exostoma is described in this study. The new species, E. ericinum, is known from the upper Dayingjiang (=Taping River) drainage in southwestern China and is distinguished from congeners in having an unique combination of the following characters: 42–44 vertebrae; parallel striae on anterolateral surfaces of lips and lower surface of maxillary barbel; interorbital distance 26–31% HL; preanal length 67.7–70.5% SL; body depth at anus 10.4–12.0% SL (1.4–1.9 times in caudal peduncle depth); length of adipose-fin base 39.5–43.0% SL; lacking an inc

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25

García-Alzate, Carlos A., Donald C. Taphorn, Cesar Roman-Valencia, and Francisco A. Villa-Navarro. "Hyphessobrycon natagaima (Characiformes: Characidae) a new species from Colombia, with a key to the Magdalena Basin Hyphessobrycon species." Caldasia 37, no. 1 (2015): 221. http://dx.doi.org/10.15446/caldasia.v37n1.51228.

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<p>A new species, Hyphessobrycon natagaima, is described from the upper Magdalena River Basin in Colombia. It differs from all other species of Hyphessobrycon with a dark lateral stripe inhabiting the Magdalena River Basin: H. poecilioides, H. proteus and H. ocasoensis, by having eight to twelve pored lateral-line scales (vs. 14-26); four scales between the lateral line and the pelvic-fin insertions (vs. five or six); one tooth on the maxilla (vs. zero in H. poecilioides, and two to five in H. proteus; except H. ocasoensis, with one), a dark, interrupted, lateral stripe that is not in co

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FRASER, THOMAS H. "A review of the species in the Apogon fasciatus group with a description of a new species of cardinalfish from the Indo-West Pacific (Perciformes: Apogonidae)." Zootaxa 924, no. 1 (2005): 1. http://dx.doi.org/10.11646/zootaxa.924.1.1.

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Nine nominal, Indo-West Pacfic species are treated: Apogon fasciatus (White, 1790), Apogon quadrifasciatus Cuvier in Cuvier & Valenciennes, 1828, Apogon monogramma Günther, 1880, Apogon septemstriatus Günther, 1880, Apogon evanidus Fowler 1904, Apogon elizabethae (Jordan & Seale, 1905), Apogon quinquestriatus Regan, 1908, Apogon kiensis Jordan & Snyder, 1901 and Apogon bryx Fraser, 1998. Four species treated as valid have VII first-dorsal spines: Apogon fasciatus with two brownish stripes on each side of the head and body to caudal peduncle and a faint, variable stripe along a port

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27

Benzer, Semra. "Morphometric features of topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) in the Hirfanlı Reservoir, Turkey." Acta Aquatica: Aquatic Sciences Journal 7, no. 1 (2020): 8. http://dx.doi.org/10.29103/aa.v7i1.2030.

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The aim of this study was to some morphometric characteristics of Pseudorasbora parva from Hirfanlı Reservoir, Turkey. A morphological analysis of 29 morphometric characters were performed. These characteristics head length; preorbital distance; eye diameter; postorbital distance; head depth; predorsal distance; prepelvic distance; preanal distance; pectoral fin–pelvic fin (P-V) distance; pelvic fin– anal fin (V-A) distance; body depth (18 perpendicular); dorsal fin (anterior end)-anal fin distance (Da-A); dorsal fin (posterior end)–anal fin distance (Dp-A); postdorsal distance; postanal dista

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Zarske, Axel. "Nannostomus nigrotaeniatus spec. nov. – ein neuer Ziersalmler aus Venezuela (Teleostei: Characiformes: Lebiasinidae)." Vertebrate Zoology 63, no. 2 (2013): 125–37. http://dx.doi.org/10.3897/vz.63.e31417.

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A new pencil-fish of the genus Nannostomus Günther, 1872 is described. N. nigrotaeniatus spec. nov. is closely related with N. trifasciatus Steindachner, 1876 and N. erythrurus (Eigenmann, 1909). The morphometric and meristic features of the three species are similar. Clear differences are found in the colouration and pattern. (1) N. nigrotaeniatus spec. nov. has a sexual dichromatism, which is not developed in N. trifasciatus and N. erythrurus. The males of N. nigrotaeniatus spec. nov. have ruby spots on the dorsal-, anal-, ventral-fins and on the base of the caudal-lobes. The fins of the fem

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29

Zarske, Axel. "Nannostomus nigrotaeniatus spec. nov. – ein neuer Ziersalmler aus Venezuela (Teleostei: Characiformes: Lebiasinidae)." Vertebrate Zoology 63 (August 29, 2013): 125–37. https://doi.org/10.3897/vz.63.e31417.

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A new pencil-fish of the genus Nannostomus Günther, 1872 is described. N. nigrotaeniatus spec. nov. is closely related with N. trifasciatus Steindachner, 1876 and N. erythrurus (Eigenmann, 1909). The morphometric and meristic features of the three species are similar. Clear differences are found in the colouration and pattern. (1) N. nigrotaeniatus spec. nov. has a sexual dichromatism, which is not developed in N. trifasciatus and N. erythrurus. The males of N. nigrotaeniatus spec. nov. have ruby spots on the dorsal-, anal-, ventral-fins and on the base of the caudal-lobes. The fins of the fem

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30

Zarske, Axel. "Nannostomus nigrotaeniatus spec. nov. - ein neuer Ziersalmler aus Venezuela." Vertebrate Zoology 63 (August 29, 2013): 125–37. https://doi.org/10.3897/vz.63.e31418.

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A new pencil-fish of the genus Nannostomus Günther, 1872 is described. N. nigrotaeniatus spec. nov. is closely related with N. trifasciatus Steindachner, 1876 and N. erythrurus (Eigenmann, 1909). The morphometric and meristic features of the three species are similar. Clear differences are found in the colouration and pattern. (1) N. nigrotaeniatus spec. nov. has a sexual dichromatism, which is not developed in N. trifasciatus and N. erythrurus. The males of N. nigrotaeniatus spec. nov. have ruby spots on the dorsal-, anal-, ventral-fins and on the base of the caudal-lobes. The fins of the fem

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31

RODCHAROEN, EKNARIN, and NIEL L. BRUCE. "Two new species of the marine isopod genus Cirolana Leach, 1818 (Crustacea: Isopoda: Cirolanidae) from the coast of the western Gulf of Thailand." Zootaxa 4950, no. 3 (2021): 469–86. http://dx.doi.org/10.11646/zootaxa.4950.3.3.

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Cirolana khamensis sp. nov. and C. parawongat sp. nov. are described from specimens collected in the western Gulf of Thailand at depths of 8 metres and 1 metre, respectively. Both species belong to the Cirolana ‘pleonastica-group’ with tubercles on the dorsal surfaces, transverse sutures on the pereonites, pleonite 3 not posteriorly produced and pleonite 4 posterolaeral margin rounded. Cirolana khamensis sp. nov. can be distinguished from other species of Cirolana ‘pleonastica-group’ by lateral margin of uropodal exopod having five robust seatae and a continuous row of plumose marginal setae,

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32

BRITSKI, HERALDO A., JÚLIO C. GARAVELLO, and JORGE L. RAMIREZ. "Description of a new species of Schizodon (Characiformes: Anostomidae) from the upper rio Tapajós basin, Brazil." Zootaxa 5330, no. 1 (2023): 135–40. http://dx.doi.org/10.11646/zootaxa.5330.1.8.

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A new species of Schizodon with five dark transverse blotches on the body and a large black blotch at the end of the caudal peduncle is described from the rio Arinos, upper rio Tapajós basin, in the Brazilian Amazon. The new species shares a color pattern composed by transverse brown bars and a caudal fin blotch with Schizodon fasciatus and S. trivittatus but possess twelve rows of scales around the caudal peduncle, a unique character among the species of genus.

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33

NG, HEOK HEE, and JÖRG FREYHOF. "Two new species of Glyptothorax (Teleostei: Sisoridae) from central Vietnam." Zootaxa 1873, no. 1 (2008): 11. http://dx.doi.org/10.11646/zootaxa.1873.1.2.

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Two new species of Glyptothorax are described from the rivers draining the Annam Cordilleras in central Vietnam. Glyptothorax filicatus n. sp. is distinguished from congeners in Indochina in having a diverging pattern of striae running along the edges of the central depression in the thoracic adhesive apparatus, and a combination of the following characters: dorsal spine length 13.7–15.1% SL, pectoral fin length 21.5–21.9% SL, length of adipose-fin base 13.3–15.0% SL, depth of caudal peduncle 8.4–8.8% SL, body depth at anus 15.1–16.0% SL, snout length 48.0–52.9% HL, eye diameter 8.9– 9.9% HL,

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34

Valencia, César Román, Raquel I. Ruiz-C, and Donald C. Taphorn. "Analysis of a new species of the Astyanax orthodus group (Characiformes: Characidae) from the upper Madre de Dios River, Amazon River Basin, Peru." Journal of Aquaculture & Marine Biology 12, no. 2 (2023): 195–200. http://dx.doi.org/10.15406/jamb.2023.12.00374.

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Based on ten specimens, using morphometric, meristic and osteological characters, Astyanax leoni n. sp. is described from the upper Madre de Dios River drainage, Amazon River Basin of Peru. A. leoni n. sp. is a member of the Astyanax orthodus species group and is distinguished (except from A. multidens, A. villwocki, and A. gandhiae) in having an inconspicuous rod-shaped stripe on the caudal peduncle that extends anteriorly on top of a silver lateral stripe. It differs from the species mentioned above as follows: from A. multidens by having shorter chevron marks that cover up to only two serie

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35

Sullivan, John, Sebastien Lavoue, and Carl D. Hopkins. "Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa." ZooKeys 561 (February 8, 2016): 117–50. https://doi.org/10.3897/zookeys.561.7137.

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We use mitochondrial and nuclear sequence data to show that three weakly electric mormyrid fish specimens collected at three widely separated localities in Gabon, Africa over a 13-year period represent an unrecognized lineage within the subfamily Mormyrinae and determine its phylogenetic position with respect to other taxa. We describe these three specimens as a new genus containing two new species. Cryptomyrus, new genus, is readily distinguished from all other mormyrid genera by a combination of features of squamation, morphometrics, and dental attributes. Cryptomyrus ogoouensis, new species

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36

CASATTI, LILIAN, and NING LABBISH CHAO. "A new species of Pachyurus Agassiz 1831 (Teleostei: Perciformes: Sciaenidae) from the Río Napo basin, Eastern Ecuador." Zootaxa 38, no. 1 (2002): 1. http://dx.doi.org/10.11646/zootaxa.38.1.1.

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A new species of Neotropical freshwater sciaenid, Pachyurus stewarti, is described from the Río Napo basin, Ecuador. The new species is readily distinguishable from its congeners by having a unique coloration pattern of about twelve brownish vertical oval blotches and bars on the lateral surface of the body from the opercle to the caudal peduncle, and a longitudinal stripe which starts below the soft dorsal-fin base and extends along the mid-line of the caudal peduncle to the base of the caudal fin.

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37

HE, CHUNLIN, E. ZHANG, and ZHAOBIN SONG. "Triplophysa pseudostenura, a new nemacheiline loach (Cypriniformes: Balitoridae) from the Yalong River of China." Zootaxa 3586, no. 1 (2012): 272. http://dx.doi.org/10.11646/zootaxa.3586.1.26.

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A new species of nemacheiline loach, Triplophysa pseudostenura, is described from the Yalong River, a tributary of theupper Yangtze River drainage in China. Previous collectors misidentified the species as T. stenura. Triplophysapseudostenura can be separated from T. stenura and other valid species of Triplophysa by the following combination ofcharacters: body smooth and without scales; head tapering; lips thin and smooth; trunk and caudal peduncle slender,laterally compressed; depth of caudal peduncle tapering posteroventrally approaching caudal fin; posterior chamber of gasbladder reduced or

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38

NG, HEOK HEE, and JEREMY J. WRIGHT. "Amblyceps cerinum, a new catfish (Teleostei: Amblycipitidae) from northeastern India." Zootaxa 2672, no. 1 (2010): 50. http://dx.doi.org/10.11646/zootaxa.2672.1.3.

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Amblyceps cerinum, a new South Asian amblycipitid catfish species, is described from the Brahmaputra River drainage in northern West Bengal, India. The new species can be distinguished from congeners in having a combination of upper jaw longer than lower, incomplete lateral line terminating beneath posterior insertion of dorsal fin, length of adipose-fin base 32.4–38.3% SL, caudal peduncle length 21.9–24.5% SL, caudal peduncle depth 9.2–11.2% SL, 41–44 postWeberian vertebrae, posterior end of adipose fin separated from dorsal procurrent caudal-fin rays by distinct notch, and truncate caudal fi

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39

GOPI, K. C. "Glyptothorax malabarensis, a new catfish (Teleostei: Sisoridae) from the Western Ghats of Kerala, India." Zootaxa 2528, no. 1 (2010): 53. http://dx.doi.org/10.11646/zootaxa.2528.1.3.

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Glyptothorax malabarensis, a new species of the Asian catfish family Sisoridae, is described from a hill stream of an upper tributary of the west-flowing Valappattanam River drainage of Kerala State, India. It is distinguished from its congeners in Peninsular India by the following combination of characters: body depth 19.6–9.9% SL, caudal peduncle length 14.3–14.7% SL and caudal peduncle depth 12.4–12.7% SL (caudal peduncle depth 86.4–88.1% of its length); thoracic adhesive apparatus approximately pentagonal, as long as broad, without a median depression; skin of head and body minutely granul

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40

Harris, P. D. "Changes in the site specificity of Gyrodactylus turnbulli Harris, 1986 (Monogenea) during infections of individual guppies (Poecilia reticulata Peters, 1859)." Canadian Journal of Zoology 66, no. 12 (1988): 2854–57. http://dx.doi.org/10.1139/z88-414.

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Gyrodactylus turnbulli Harris, 1986 infected the caudal peduncle (42% of all flukes) and caudal fin (40%), of guppies (Poecilia reticulata Peters, 1859), occurring less frequently on the pectoral (8%), dorsal (5%), pelvic (2%), and anal (1%) fins. This distribution of parasites on the fish and their crowding varied with infection age. On newly infected guppies, G. turnbulli occurred less frequently on the peduncle, and mean nearest-neighbour distance was not correlated with population size. Over the first 4 days of the infection the proportion of parasites on the peduncle increased to 60%, and

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41

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

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42

FRASER, THOMAS H., and JOHN E. RANDALL. "Two new species of deeper dwelling Apogon (Perciformes: Apogonidae) from Micronesia and South Pacific Ocean." Zootaxa 171, no. 1 (2003): 1. http://dx.doi.org/10.11646/zootaxa.171.1.1.

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Apogon brevispinis is described from two specimens, the larger of which is missing the caudal peduncle, collected at the Austral Islands. This species has a tiny first dorsal-fin spine (5-8% of the third dorsal-fin spine length), 18-19 well-developed gill rakers on first arch, 5 predorsal scales, elongated last soft dorsal and anal fin-rays, 14 circumpeduncular scales, 5 broad tan-brown stripes alternating with 5 narrow whitish stripes, and an irregular dark caudal peduncle mark. Apogon regula is described from five specimens collected in Guam and the Carolina Islands. This species has a longe

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43

KATONGO, CYPRIAN, OLE SEEHAUSEN, and JOS SNOEKS. "A new species of Pseudocrenilabrus (Perciformes: Cichlidae) from Lake Mweru in the Upper Congo River System." Zootaxa 4237, no. 1 (2017): 181. http://dx.doi.org/10.11646/zootaxa.4237.1.10.

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Pseudocrenilabrus pyrrhocaudalis sp. nov. is described from Lake Mweru in the upper Congo River drainage, on the border of the Democratic Republic of Congo and Zambia. This species, which appears to be endemic to the lake, lives in sympatry with P. philander. Pseudocrenilabrus pyrrhocaudalis sp. nov. is distinguished from P. philander in nuptial males by the presence of an orange colour on the ventral part of the body and the proximal parts of the anal and caudal fins, a broad band of bright white on the distal edge of anal and caudal fins, a uniform grey head and dorsum, and a subtruncate cau

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44

VAN TASSELL, JAMES L., and CAROLE C. BALDWIN. "A review of the gobiid genus Akko (Teleostei: Gobiidae) with description of a new species." Zootaxa 462, no. 1 (2004): 1. http://dx.doi.org/10.11646/zootaxa.462.1.1.

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Akko was originally described for a highly autapomorphic species of goby, A. dionaea, taken off Brazil. The genus is here recorded for the first time from the eastern Pacific Ocean. The poorly known eastern Pacific goby Amblyopus brevis G nther is redescribed as Akko brevis based on the study of numerous specimens recently collected off Panama and El Salvador, and Akko rossi is described as new from the coast of El Salvador. Akko dionaea has 11+16 vertebrae, 76 scales in the lateral series, non-overlapping scales on the caudal peduncle, and no melanophores on the pectoral fin or female genital

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45

TEJAVEJ, ANURATANA. "Barilius signicaudus, a new species of cyprinid fish from Maeklong Basin, western Thailand (Cypriniformes: Cyprinidae)." Zootaxa 3586, no. 1 (2012): 138. http://dx.doi.org/10.11646/zootaxa.3586.1.13.

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Barilius signicaudus, a new species of cyprinid fish from the Khwae Noi and Khwae Yai branches of the Maeklong River,western Thailand, is described. It is characterized by the combination of a large, elongated blotch at the caudal-fin base(blotch is formed by the fusion of the large caudal spot at the fleshy end of the caudal base and the last vertical bar on theflank) that extends about 1/3 of the distance from the caudal-fin origin beyond the last scale on the caudal base to the mar-gin of the caudal fork; an anal-fin origin opposing the 2nd–4th branched dorsal-fin rays; eight scale rows abo

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46

Valencia, César, Carlos Garcia-Alzate, Raquel Ruiz-C., and Donald Taphorn. "A new species of Hemibrycon (Teleostei: Characiformes: Characidae) from the Roble River, Alto Cauca, Colombia, with a key to species known from the Magdalena - Cauca River Basin." Vertebrate Zoology 60, no. 2 (2010): 99–105. http://dx.doi.org/10.3897/vz.60.e30996.

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A new species, Hemibrycon palomae, is described from the La Paloma and La Siria Creek, río Roble drainage, of the upper Cauca River Basin, Colombia. It differs from congeners in meristic characters. It also has two reddish spots located on both the dorsal and ventral margins of the caudal peduncle (vs. only one reddish spot on the ventral margin of the caudal peduncle). Ecological habitat data and an updated key to all Hemibrycon species known from the Magdalena-Cauca River Basin are also presented.

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47

Valencia, Cèsar, Carlos Garcia-Alzate, RAQUEL Ruiz-C, and Donald Taphorn. "A new species of Hemibrycon (Teleostei: Characiformes: Characidae) from the Roble River, Alto Cauca, Colombia, with a key to species known from the Magdalena - Cauca River Basin PDF." Vertebrate Zoology 60 (September 2, 2010): 99–105. https://doi.org/10.3897/vz.60.e30996.

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A new species, Hemibrycon palomae, is described from the La Paloma and La Siria Creek, río Roble drainage, of the upper Cauca River Basin, Colombia. It differs from congeners in meristic characters. It also has two reddish spots located on both the dorsal and ventral margins of the caudal peduncle (vs. only one reddish spot on the ventral margin of the caudal peduncle). Ecological habitat data and an updated key to all Hemibrycon species known from the Magdalena-Cauca River Basin are also presented.

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48

SILVA, GABRIEL S. C., RAPHAEL COVAIN, CLAUDIO OLIVEIRA, and FÁBIO F. ROXO. "Description of two new species of Lithoxus (Hypostominae: Loricariidae) from rio Jari and rio Amapá basins, Brazilian Guiana Shield." Zootaxa 4347, no. 1 (2017): 151. http://dx.doi.org/10.11646/zootaxa.4347.1.9.

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Two new species of Lithoxus, a genus diagnosed by possessing a dorsoventrally depressed body, a large round oral disk, and small tooth cusps with few teeth, are described from two drainages of the Guiana Shield: Lithoxus jariensis from the rio Jari basin and L. raso from the rio Raso, rio Amapá basin. The new species, L. jariensis, is distinguished from congeners by having an adipose fin, by the number of branched anal-fin and caudal-fin rays, by color pattern of the body, number of teeth, adipose-fin length, dorsal adipose-caudal distance, caudal peduncle depth, cleithral width, and dorsal-an

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49

CHEN, ZIMING, JIAN YANG, and JUNXING YANG. "Description of a new species of the genus Yunnanilus Nichols, 1925 (Teleostei: Nemacheilidae) from Yunnan, China." Zootaxa 3269, no. 1 (2012): 57. http://dx.doi.org/10.11646/zootaxa.3269.1.5.

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A new species of the family Nemacheilidae, Yunnanilus niulanensis, is described from the upper reach of the NiulanjiangRiver, a branch of the Jinsha River, in Songming County, Yunnan Province, China. It can be distinguished from all otherYunnanilus species by the combination of the following characters: dorsal fin rays iii, 9; anal fin rays iii, 5; pectoral finrays i, 11; pelvic fin rays i, 7–8; branched caudal fin rays 14; mouth subterminal; 9–11 gillrakers on the inner side of thefirst gill arch, no gillrakers on the outer side; upper two-thirds of body and head covered by large brown spots;

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50

Barbosa, Maria A. "Description of two new species of the catfish genus Trichomycterus (Teleostei: Siluriformes: Trichomycteridae) from the coastal river basins, southeastern Brazil." Vertebrate Zoology 63, no. 3 (2013): 269–75. http://dx.doi.org/10.3897/vz.63.e31442.

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Two new species of catfish genus Trichomycterus are described from southeastern Brazil. Trichomycterus mimosensis new species is diagnosed by the number of pectoral-fin rays, the first pectoral-fin ray prolonged as a filament, the length of the pectoral-fin filament, the length of the dorsal-fin base, the morphology of the metapterygoid, the length of the maxillary barbel, the morphology of the hypobranchial 1, the width and depth of the head, the depth of the caudal peduncle, the shape of the head and caudal fin, and the colour pattern. Trichomycterus gasparinii new species is diagnosed by th

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