Squalius platyceps, a new species of fish (Actinopterygii: Cyprinidae) from the Skadar Lake basin

2010 ◽  
Vol 19 (1) ◽  
pp. 154-167 ◽  
Author(s):  
P. Zupančič ◽  
D. Marić ◽  
A.M. Naseka ◽  
N.G. Bogutskaya
Keyword(s):  
New Species ◽  
Head Width ◽  
Lake Basin ◽  
New Taxon ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Interorbital Width ◽  
Black Pigmentation ◽  
A New Species

Squalius platyceps, new species, is described from the Drin River drainage including the Skadar Lake and its tributaries. The new taxon is distinguished from other species of the genus Squalius in the eastern Adriatic Sea basin by a combination of the following character states: body depth 24-29% SL; head length 25-30% SL; a wide head (head width 52-59% HL, and interorbital width 37-42% HL); a moderately pointed conical snout; a subterminal mouth, with a projecting upper lip; a straight mouth cleft; lower jaw length (38-43% HL) about equal to caudal peduncle depth and only slightly larger than interorbital width; 43-47 (commonly 44-45) total lateral line scales; commonly 8½ branched anal fin rays; anal fin margin straight (in specimens up to about 180 mm SL) or convex; commonly 43 total vertebrae (24+19 or 25+18); a row of dense black pigment dots along the outer margin of scales on back and flanks forming a regular reticulate pattern, and intense black pigmentation on pectoral, pelvic, anal and caudal fins.

Pseudobagarius eustictus, a new species of catfish from northern Laos (Siluriformes: Akysidae)

Zootaxa ◽  
2021 ◽  
Vol 4996 (2) ◽  
pp. 322-330
Author(s):  
HEOK HEE NG ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
The Body ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Pectoral Spine ◽  
Eye Diameter ◽  
Adipose Fin ◽  
A New Species

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.  

scholarly journals Akysis longifilis, a new species of catfish (Teleostei: Akysidae) from Myanmar

Zootaxa ◽  
2006 ◽  
Vol 1150 (1) ◽  
pp. 19 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Species Group ◽  
Head Width ◽  
Posterior Edge ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Peduncle Length ◽  
A New Species

Akysis longifilis, new species, is described from the Sittang River drainage in Myanmar. It is a member of the A. variegatus species group and can be distinguished from congeners in the group (except for A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius and A. vespa) in having a smooth (vs. serrated) posterior edge of the pectoral spine. It is distinguished from A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius and A. vespa in having a unique combination of: length of adipose-fin base 25.7–31.1% SL, body depth at anus 9.7–13.6% SL, caudal peduncle length 18.3–23.2% SL, caudal peduncle depth 5.6–7.2% SL, head width 21.1–24.7% SL, nasal barbel length 67.4–96.4% HL, maxillary barbel length 123.2–159.6% HL, vertebrae 33–35, body with light saddle-shaped spots, and caudal fin forked.

Akysis pulvinatus, a new species of catfish (Siluriformes: Akysidae) from southern Thailand

Zootaxa ◽  
2007 ◽  
Vol 1608 (1) ◽  
pp. 51-58
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Lower Lobe ◽  
Head Width ◽  
Posterior Edge ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Southern Thailand ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

Akysis pulvinatus, new species, is described from southern Thailand. It can be distinguished from congeners in having a combination of: length of adipose-fin base 23.0–25.2% SL, body depth at anus 13.2–16.0% SL, caudal peduncle depth 9.4–10.3% SL, head length 27.6–29.8% SL, head width 21.9–25.1% SL, length of nasal barbel 13.9–57.5% HL, length of maxillary barbel 78.5–105.0% HL, smooth posterior edge of pectoral spine, gently forked caudal fin with lower lobe longer than upper, yellow snout, and rounded pale colored patches on body. A possible case of Müllerian mimicry with the syntopic Pseudobagarius leucorhynchus is mentioned and briefly discussed.

Glyptothorax lanceatus, a new species of sisorid catfish (Teleostei: Siluriformes) from southwestern China

Zootaxa ◽  
2012 ◽  
Vol 3250 (1) ◽  
pp. 54 ◽  
Author(s):  
HEOK HEE NG ◽  
WAN-SHENG JIANG ◽  
XIAO-YONG CHEN
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
Southwestern China ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Adipose Fin ◽  
Peduncle Length ◽  
Region 10 ◽  
A New Species

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 1.60–1.74 times in its length; depressed area in thoracic adhesive apparatus not wholly enclosed byridges; ridges of thoracic adhesive apparatus not extending onto gular region;10–13 serrations on posterior edge of pecto-ral spine; pectoral-fin length 21.1–24.5% SL; length of adipose-fin base 12.2–13.2% SL; dorsal-to-adipose distance 23.0–24.8% SL; distally expanded neural spines in vertebrae between dorsal and adipose fins; body depth at anus 12.4–14.8%SL; post-adipose distance 18.7–20.3% SL; caudal-peduncle length 20.3–21.8% SL; caudal-peduncle depth 6.7–7.4%SL;40–41 vertebrae; reaching to at least ca. 170 mm TL in size; and uniformly dark-colored body generally devoid of pale or dark markings.

scholarly journals Squalius janae, a new species of fish from the Adriatic Sea basin in Slovenia (Actinopterygii: Cyprinidae)

Zootaxa ◽  
2010 ◽  
Vol 2536 (1) ◽  
pp. 53 ◽  
Author(s):  
NINA G. BOGUTSKAYA ◽  
PRIMOŽ ZUPANČIČ
Keyword(s):  
New Species ◽  
Adriatic Sea ◽  
River System ◽  
Species Group ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Black Spots ◽  
Long Head ◽  
A New Species

Squalius janae, sp. nov., is described from the upper Dragonja River system in the Adriatic Sea basin in Slovenia. The new species is distinguished from other members of the S. cephalus species group by a combination of the following characters: a long head, head length, 29−32% SL, always markedly exceeding body depth; a pointed conical snout; a slightly subterminal mouth, with a clearly projecting upper jaw; a long straight mouth cleft; lower-jaw length 39−45% HL, always greater than caudal-peduncle depth; a large eye, its diameter 19−25% HL; a large triangular 5 th infraorbital; a marked discontinuity between the dorsal profile of the head and body; usually 44−47 total lateral-line scales; usually 9½ branched anal-fin rays; usually 44 total vertebrae (24+20 and 25+19); a strong silvery tint in colouration; scales easily lost; iris, pectoral, pelvic and anal-fin pigmentation with yellow shades; flank scales margined by a few black pigment dots along their free margin and intense pigments on scale pockets, forming vertically elongate black spots.

Description of Bagarius vegrandis, a new species of sisorid catfish from Indochina (Actinopterygii: Siluriformes), with notes on the identity of Bagarius bagarius

Zootaxa ◽  
2021 ◽  
Vol 4926 (1) ◽  
pp. 134-146
Author(s):  
HEOK HEE NG ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
Indian Subcontinent ◽  
Dorsal Surface ◽  
Valid Species ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Eye Diameter ◽  
Adipose Fin ◽  
Peduncle Length

Bagarius vegrandis, new species, is described from the Chao Phraya and Mekong river drainages. It differs from congeners in having a small maximum body size (to 220 mm SL vs. 520–1400 mm SL) and the adipose-fin origin markedly posterior to (vs. at vertical through or very slightly posterior to) the anal-fin origin. It further differs from congeners in having the following unique combination of characters: ovoid unculiferous plaques on dorsal surface of head, lateral margin of frontal not significantly deflected dorsally, eye diameter 11–15% HL, interorbital distance 23–28% HL, head width 18.3–22.3% SL, head depth 11.1–14.1% SL, filamentous extensions to first pectoral-fin element reaching to anus, dorsal spine width 10.6–13.9 times in its length, body depth at anus 8.7–12.0% SL, neural spines of the 4–6 vertebrae immediately anterior to adipose fin distally flattened but not forming series of prominent bumps along dorsal midline, length of adipose-fin base 10.8–13.0% SL, caudal-peduncle length 19.0–22.4% SL, caudal-peduncle depth 3.2–4.2% SL, 19–20 preanal vertebrae, and 39–40 total vertebrae. Bagarius bagarius (Hamilton, 1822) is demonstrated to be a species restricted to the Indian subcontinent (with Bagrus yarrelli Sykes, 1839, Pimelodus platespogon Valenciennes, in Jacquemont, 1839 and Pimelodus carnaticus Jerdon, 1849 as junior subjective synonyms) and Bagarius lica Volz, 1903 resurrected from synonymy with B. yarrelli as a valid species from Southeast Asia. 

Nandus prolixus, a new species of leaf fish from northeastern Borneo (Teleostei: Perciformes: Nandidae)

Zootaxa ◽  
2006 ◽  
Vol 1328 (1) ◽  
pp. 51 ◽  
Author(s):  
PROSANTA CHAKRABARTY ◽  
RONALD G. OLDFIELD ◽  
HEOK H. NG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Slender Body ◽  
Dark Spot ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

Nandus prolixus sp. nov. is described from the Sepilok River drainage in Sabah, northeastern Borneo. This species is distinguished from its only Sundaic southeastern Asian congener, N. nebulosus, in having a longer, more produced snout (25.7–30.6% HL vs. 18.5–26.1), more lateralline scales (33–37 vs. 24–34), more scales below the lateral line (12 vs. 10–11), fewer spines in the dorsal fin (XIV vs. XV–XVI), and fewer pectoral-fin rays (15–16 vs. 17–19). It differs from N. nandus (from India) in having fewer lateral-line scales (33–37 vs. 42–55), fewer scales above the lateral line (4–5 vs. 6–7), fewer scales below the lateral line (12 vs. 14–18), more dorsal spines (XIV vs. XII–XIII), and the absence (vs. presence) of a distinct dark spot at the base of the caudal peduncle. It differs from N. oxyrhynchus (from mainland southeastern Asia) in having a more slender body (body depth 37.6–40.5% SL vs. 41.3–44.1) and a less steeply sloping predorsal profile.

Epinephelus fuscomarginatus (Perciformes: Epinephelidae), a new species of grouper from off the Great Barrier Reef, Australia

Zootaxa ◽  
2019 ◽  
Vol 4674 (3) ◽  
pp. 329-348 ◽  
Author(s):  
JEFFREY W. JOHNSON ◽  
JESSICA WORTHINGTON WILMER
Keyword(s):  
New Species ◽  
The Body ◽  
The Sea Of Japan ◽  
The East China Sea ◽  
Body Depth ◽  
Lower Jaw ◽  
Fin Rays ◽  
The Indian Ocean ◽  
Body Comparison ◽  
A New Species

A new species of epinephelid fish from northeastern Australia is described based on five specimens 408–564 mm SL collected by deep water demersal dropline fishing. Epinephelus fuscomarginatus sp. nov. is known from the Capricorn Channel, off the southern end of the Swain Reefs, Qld, Australia, in depths of 220–230 m. It is distinguished by a combination of dorsal-fin rays XI, 14, pectoral-fin rays 17, anal-fin rays III, 8, caudal-fin rounded, lateral-line scales 60–67, gill rakers 9–10 + 16–19 = 25–28, body depth 3.0–3.4 in SL, angle of preopercle broadly rounded, bearing 4–9 small non-prominent serrae, midlateral part of lower jaw with 2 rows of teeth, tooth patches on vomer and palatines narrow, in 2–3 and 2–4 rows, respectively, and coloration including broad dark brown margins to the soft dorsal, anal and caudal fins. There are no dark spots on the head, body, or fins at any known size and in subadults there are two faint pale brown bars radiating from the eye to the posterior margin of the opercle, and diffuse irregular brown wavy bars and blotches on the sides of the body. Comparison of the mitochondrial cytochrome c oxidase subunit 1 (CO 1) genetic marker utilised in DNA barcoding produced modest but consistent genetic divergences of 1.10% and 2.70 % between E. fuscomarginatus sp. nov. and its closest sampled congeners, E. magniscuttis and E. epistictus, respectively. Further evidence is presented to indicate that populations of E. epistictus currently recognised from the Indian Ocean east to the Indo-Australian Archipelago may be distinct from those from the Sea of Japan to the East China Sea. 

scholarly journals A new species of Tetragonopterus (Characiformes: Characidae) from Central Amazon lowlands, Brazil

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Bruna Q. Urbanski ◽  
Bruno F. Melo ◽  
Gabriel S. C. Silva ◽  
Ricardo C. Benine
Keyword(s):  
New Species ◽  
New Taxon ◽  
Caudal Peduncle ◽  
Posterior Portion ◽  
Lowland Rivers ◽  
Central Amazon ◽  
Dark Pigmentation ◽  
A New Species

ABSTRACT A new species of Tetragonopterus is described from lowland rivers of Central Amazon. It differs from congeners by having a vertically-oriented patch of dark pigmentation limited to posterior portion of the caudal peduncle and by bearing five thin and sharp teeth on dentary, along with other morphometric and meristic features. We hypothesize that the new taxon belongs to the herein named “Tetragonopterus anostomus clade” that includes T. anostomus, T. denticulatus, T. kuluene, and T. juruena.

Exostoma kottelati, a new species of catfish (Teleostei: Sisoridae) from Arunachal Pradesh, India

Zootaxa ◽  
2019 ◽  
Vol 4585 (2) ◽  
pp. 369 ◽  
Author(s):  
ACHOM DARSHAN ◽  
WAIKHOM VISHWANATH ◽  
SANTOSHKUMAR ABUJAM ◽  
DEBANGSHU NARAYAN DAS
Keyword(s):  
New Species ◽  
River Basin ◽  
Arunachal Pradesh ◽  
Brahmaputra River ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Brahmaputra Basin ◽  
Adipose Fin ◽  
Peduncle Length ◽  
A New Species

Exostoma kottelati, new species, is described from the Ranga River, Brahmaputra basin, in Arunachal Pradesh state, northeastern India. It differs from congeners in the Brahmaputra River basin in having a longer adipose-fin base (33.4–36.0 % SL vs. 23.4–32.9), a greater (except E. mangdechhuensis) pre-pelvic length (45.6–47.3 % SL vs. 39.3–44.6) and a greater pre-anal length (73.9–76.5 % SL vs. 62.2–70.1). It further differs from all known congeners by the following unique combination characters: the adipose fin is distinctly separated from the dorsal procurrent caudal-fin rays, pre-dorsal length 38.9–41.7% SL, adipose-fin base length 33.4–36 % SL, caudal peduncle length 18.7–21.1 % SL, caudal peduncle depth 8.8–9.5 % SL, and body depth at anus 12.5–13.5 % SL. This is the fifth species of Exostoma known from the Brahmaputra River basin. 

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