scholarly journals Bagrichthys obscurus a new species of bagrids catflsh from Indochina (Teleostei: Bagridae)

1969 ◽  
pp. 545-552
Author(s):  
Heok Hee Ng
Keyword(s):  
New Species ◽  
The Body ◽  
Slender Body ◽  
Genital Papilla ◽  
Fin Ray ◽  
Adipose Fin ◽  
Brown Body ◽  
A New Species

Bragrichthys obscuros new species, is described from drainages Indochina. It is morphologically similar to and has heen previously identified as B. macmpterus;butcan be differentiated from that speqres in having a uniformly brown body without a pale midlateral stripe and without pale blotches on the sides of the body a more slender body, a shorter adipose-fin base, and the genital pápilla, in males mepting tbe base, of the first anal-fin ray

Glyptothorax coracinus, a new species of hillstream catfish from Cambodia (Teleostei: Sisoridae)

Zootaxa ◽  
2008 ◽  
Vol 1839 (1) ◽  
pp. 60 ◽  
Author(s):  
HEOK HEE NG ◽  
WALTER J. RAINBOTH
Keyword(s):  
Dorsal Surface ◽  
Color Pattern ◽  
The Body ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Fin Ray ◽  
Eye Diameter ◽  
Adipose Fin ◽  
Brown Body ◽  
A New Species

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, tubercles on the dorsal surface of the head with a single, median ridge, and anastomosing striae absent on thoracic adhesive apparatus that does not reach the level of the base of the last pectoral-fin ray.

scholarly journals Gephyrocharax torresi (Characiformes: Characidae: Stevardiinae), a new species from the río Cascajales basin, río Magdalena system, Colombia

2013 ◽  
Vol 11 (2) ◽  
pp. 275-284 ◽  
Author(s):  
James Anyelo Vanegas-Ríos ◽  
María de las Mercedes Azpelicueta ◽  
Juan Marcos Mirande ◽  
María Dolly García Gonzales
Keyword(s):  
New Species ◽  
The Body ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Fin Ray ◽  
Fin Rays ◽  
Adipose Fin ◽  
Black Pigmentation ◽  
A New Species

A new species of Gephyrocharax is described from the río Cascajales basin, a tributary of the río La Colorada, río Magdalena system, Colombia. The new species is distinguished from its congeners, exceptG. melanocheir, by the absence of an adipose fin in most specimens and by the possession of a lateral branched pectoral-fin ray in males with a distal fan-shaped structure with minute bony hooks and a dark blotch or a few scattered dark brown chromatophores along its branches. The new species differs from G.melanocheir by the absence of an intense black pigmentation at the base of the anterior five dorsal-fin rays, the number of vertebrae (40-41vs. 38-39), the frontals contacting each other anterior to the epiphyseal bar in adults (vs. the absence of contact), the posterior margin of the mesethmoid straight in its central portion (vs. strongly concave at this point), the pouch scale of mature males reaching caudal-fin ray 11 or the area between caudal-fin rays 11 and 12 (vs. reaching only to caudal-fin ray 10 or the area between caudal-fin rays 9 and 10), the number of minute terminal branches of the lateral branched pectoral-fin ray of mature males (60-88 vs. 28-54), a longer black lateral stripe along the body in males (reaching to the base of the caudal-fin rays vs. reaching the middle of the length of the caudal peduncle), and the snout length (28.3-31.8% HLvs. 22.2-28.0% HL). The diagnosis ofGephyrocharax is modified to include species with the adipose fin variably present

Pseudolaguvia ferula, a new species of sisoroid catfish (Teleostei: Erethistidae) from India

Zootaxa ◽  
2006 ◽  
Vol 1229 (1) ◽  
pp. 59 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Head Width ◽  
Body Depth ◽  
Spine Length ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Brown Body ◽  
A New Species ◽  
Pelvic Fin

Pseudolaguvia ferula, a new species of erethistid catish, is described from the Brahmaputra River drainage in India. It can be distinguished from congeners in having a terete (vs. depressed) head and body, manifested in the narrower head width (17.1–19.1% SL vs. 19.4–23.4), a smaller anterior fontanel (about one third the length of the frontals vs. at least half the length), and very faint, poorly contrasting cream bands that are sometimes absent on some individuals (vs. sharply contrasting cream bands on a brown body). It can be further distinguished from congeners in having a unique combination of the following characters: dorsal-spine length 17.3–18.7% SL, pectoral-spine length 20.2–24.3% SL, pelvic-fin length 13.0–14.7% SL, length of adipose-fin base 11.5–13.0% SL, caudal peduncle depth 6.9–7.8% SL, body depth at anus 12.1–13.8% SL, eye diameter 8.6–11.7% HL, vertebrae 28–30, and thoracic adhesive apparatus reaching to midway between bases of last pectoral-fin ray and first pelvic-fin ray. with its unculiferous ridges joined at their posterior ends.

scholarly journals Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

2008 ◽  
Vol 6 (3) ◽  
pp. 425-432 ◽  
Author(s):  
Héctor S. Vera Alcaraz ◽  
Weferson J. da Graça ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Species Complex ◽  
Anterior Margin ◽  
Color Pattern ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

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.

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.  

Two new species of Pseudecheneis, rheophilic catfishes (Teleostei: Sisoridae) from Nepal

Zootaxa ◽  
2005 ◽  
Vol 1047 (1) ◽  
pp. 1 ◽  
Author(s):  
HEOK HEE NG ◽  
DAVID R. EDDS
Keyword(s):  
New Species ◽  
The Body ◽  
Unique Combination ◽  
Ganges River ◽  
Caudal Peduncle ◽  
Fin Ray ◽  
Two New Species ◽  
Eye Diameter ◽  
Adipose Fin ◽  
The Ganges

Two new species of sisorid catfish of the genus Pseudecheneis are described from tributaries of the Ganges River in Nepal: Pseudecheneis crassicauda and P. serracula. Pseudecheneis crassicauda can be distinguished from congeners by a unique combination of 38–39 vertebrae, caudal peduncle depth 6.0–6.6% SL, eye diameter 7.5–8.3% HL, length of adipose-fin base 20.3–24.3% SL, pelvic fins reaching the base of the first anal-fin ray, and the presence of pale spots on the body. Pseudecheneis serracula can be distinguished from congeners in having a unique combination of 36–38 vertebrae, strongly elevated neural spines of the last 2–3 preanal and first 6–7 postanal vertebrae, length of adipose-fin base 26.8–30.4% SL, pelvic fins reaching the base of the first analfin ray, and the presence of pale spots on the body.

Scorpaena bulacephala, a new species of scorpionfish (Scorpaeniformes: Scorpaenidae) from the northern Tasman Sea

Zootaxa ◽  
2005 ◽  
Vol 1043 (1) ◽  
pp. 17 ◽  
Author(s):  
HIROYUKI MOTOMURA ◽  
PETER R. LAST ◽  
GORDON K. YEARSLEY
Keyword(s):  
New Species ◽  
Morphological Changes ◽  
The Body ◽  
Pectoral Fin ◽  
Tasman Sea ◽  
Fin Ray ◽  
Fin Rays ◽  
Pacific Species ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of small-sized scorpionfish, Scorpaena bulacephala, is described on the basis of seven specimens collected from off Norfolk and Lord Howe Islands, northern Tasman Sea, southwestern Pacific Ocean, at depths of 86–113 m. The new species is closely related to a Hawaiian endemic species, S. colorata. The two species are distinguished from 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 of the lacrimal without spines, and 17 pectoral-fin rays. The new species differs from S. colorata in having 39–44 longitudinal scales rows and relatively short fin spines and rays, especially short longest pectoral-fin ray (31.5–33.5% of standard length). Morphological changes with growth and sexual dimorphism of the new species are also discussed.

Barbus niluferensis, a new species of barbel (Teleostei: Cyprinidae) from Nilüfer River, Turkey, with re-description of B. oligolepis

Zootaxa ◽  
2009 ◽  
Vol 1981 (1) ◽  
pp. 15-28 ◽  
Author(s):  
DAVUT TURAN ◽  
MAURICE KOTTELAT ◽  
F. GÜLER EKMEKÇİ
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Slender Body ◽  
Valid Species ◽  
Marmara Sea ◽  
Dorsal Fin ◽  
Proximal Half ◽  
Black Spots ◽  
Fin Ray ◽  
A New Species

Barbus niluferensis, new species, is described from the Nilüfer River, Marmara Sea drainage, Turkey. It is distinguished by a weaker last simple dorsal-fin ray, serrated along the proximal half of its posterior margin, a maximum known size of 146 mm SL, a slender body, a short head, a short caudal fin, and larger irregular black blotches on the back and the flanks, and small black spots on the head, extending downwards to the cheeks. Barbus oligolepis Battalgil, 1941, is a valid species known from the rivers draining to the southern shore of the Marmara Sea.

scholarly journals A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil

2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Marina Barreira Mendonça ◽  
Luiz Antônio Wanderley Peixoto ◽  
Guilherme Moreira Dutra ◽  
André Luiz Netto-Ferreira
Keyword(s):  
New Species ◽  
Posterior Half ◽  
Caudal Fin ◽  
Number Of Species ◽  
Fin Ray ◽  
Fin Rays ◽  
Dark Color ◽  
Adipose Fin ◽  
A New Species

Abstract A new species of Xenurobrycon isdescribed from tributaries of the rio Tapajós, Pará, Brazil. It is diagnosed from all congeners by the dark color of the posterior half of both caudal-fin lobes, the presence of infraorbitals one, two, and three, the presence of a set of lamellar processes on eighth principal caudal-fin ray of mature males, the presence of bony hooks similar in size or decreasing posteriorly on last unbranched and first 9-12 branched anal-fin rays of mature males, the presence of only conical teeth on both jaws, the lack of the adipose fin and the presence of 15-18 predorsal scales. The description of the new species increases the number of species in Xenurobrycon to six. An updated key to the species of the genus is provided.

A new species of miniature catfish from the Malay Peninsula (Teleostei: Bagridae: Nanobagrus)

Zootaxa ◽  
2010 ◽  
Vol 2677 (1) ◽  
pp. 60 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Malay Peninsula ◽  
Body Depth ◽  
Transverse Band ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Brown Body ◽  
First Time ◽  
A New Species

Nanobagrus lemniscatus, a new species of miniature bagrid catfish from the Malay Peninsula is described here. It can be distinguished from congeners in having the following combination of characters: large cream patches on a brown body frequently coalescing to form broad transverse band, length of adipose-fin base 24.0–27.1% SL, body depth at anus 13.1–14.0% SL, 35–36 vertebrae, pectoral spine with length 16.1–18.7% SL and 7–9 serrations on its posterior margin, and a convex neurocranium. Nanobagrus stellatus is also recorded from the Malay Peninsula for the first time in this study.

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