Channa auroflammea, a new species of snakehead fish of the Marulius group from the Mekong River in Laos and Cambodia (Teleostei: Channidae)

Channa auroflammea is a new freshwater fish species of the Marulius group from the Mekong River system. Previously reported as C. marulius, C. cf. marulius, or C. aff. marulius, C. auroflammea is readily distinguished from C. marulius and other members of the Marulius group by a different colour pattern, and a DNA barcode sequence at least 6.5% divergent from other members of the group. Comparison of counts of vertebrae, dorsal-fin rays, and lateral-line scales reveals that these counts are lower in the Mekong C. auroflammea than in C. aurolineata from the Salween and Irrawaddy-Chindwin, higher than in the Marulius group species C. pseudomarulius and C. marulioides, but similar to those in C. marulius. Channa auroflammea is known from the Mekong river and tributaries in Laos and Cambodia, where it forms a regular component of the wild fisheries catch from the rivers Tonle San and Tonle Srepok. Literature records of Channa marulius from China appear to be based on confusion originating with Cuvier’s description of Ophiocephalus grandinosus.

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The snakehead fish Channa aurolineata is a valid species (Teleostei: Channidae) distinct from Channa marulius

Zootaxa ◽

10.11646/zootaxa.4514.4.7 ◽

2018 ◽

Vol 4514 (4) ◽

pp. 542 ◽

Cited By ~ 2

Author(s):

ELEANOR A. S. ADAMSON ◽

RALF BRITZ

Keyword(s):

Valid Species ◽

Colour Pattern ◽

Dorsal Fin ◽

White Spots ◽

Coi Barcoding ◽

Channa Marulius ◽

Previously Treated ◽

Mountain Chain ◽

Western Side ◽

Morphological Differences

Channa aurolineata is a valid species of the Marulius group. Previously treated as a synonym of C. marulius, C. aurolineata is readily distinguished from C. marulius by a different colour pattern, in which a conspicuous white posterior margin is present on the black scales that form the dark lateral blotches in larger juveniles and adults (vs. scales without white margin but with white spots in C. marulius). Channa aurolineata also differs from C. marulius by having more lateral line scales (65–71 vs 62–65), more dorsal-fin rays (55–58 vs 52–56) and more vertebrae (63–66 vs 59–63). In addition to these morphological differences, C. aurolineata is genetically more than 8% different (uncorrected p-distance) from C. marulius at the COI barcoding gene, a difference consistent with levels of genetic divergence observed among different species. The same characters that distinguish C. aurolineata from C. marulius also distinguish it from C. pseudomarulius, the other Indian member of the Marulius group. Channa aurolineata has a widespread distribution in larger rivers in Myanmar, including the Chindwin, Ayeyarwaddy, Sittaung and Thanlwin river basins. The Indo-Burman ranges appear to delineate the western geographical limit of this species, with C. marulius restricted to the western side of this mountain chain.

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Tonlesapia amnica, a new species of dragonet (Teleostei: Callionymidae) from the Mekong delta HEOK HEE NG (Singapore) & WALTER J. RAINBOTH (USA)

Zootaxa ◽

10.11646/zootaxa.3052.1.3 ◽

2011 ◽

Vol 3052 (1) ◽

pp. 62 ◽

Cited By ~ 5

Author(s):

HEOK HEE NG ◽

WALTER J. RAINBOTH

Keyword(s):

New Species ◽

Mekong Delta ◽

Mekong River ◽

Ventral Margin ◽

Caudal Peduncle ◽

Southern Vietnam ◽

Dorsal Fin ◽

Infraorbital Canal ◽

Fin Rays ◽

A New Species

Tonlesapia amnica, a new species of dragonet lacking a first dorsal fin, is described from the Mekong River delta in southern Vietnam. It can be distinguished from its sole congener, T. tsukawakii, in having the infraorbital canal extending beyond (vs. not reaching) ventral margin of orbit, a more slender body (7.2–13.5% SL vs. 14.3–15.0) and caudal peduncle (4.4–5.2% SL vs. 5.1–6.3), a smaller eye (6.5–8.3% SL vs. 8.7–9.2) and more dorsal-fin rays (9–10 vs. 8).

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Bangana brevirostris, a new species of cyprinid fish (Teleostei: Cypriniformes) from the Lancang-Jiang (Upper Mekong River) drainage in Yunnan, Southwest China

Zootaxa ◽

10.11646/zootaxa.1980.1.6 ◽

2009 ◽

Vol 1980 (1) ◽

pp. 61-68 ◽

Cited By ~ 1

Author(s):

KAI LIU ◽

WEI ZHOU

Keyword(s):

New Species ◽

Lateral Line ◽

Southwest China ◽

Cyprinid Fish ◽

Head Length ◽

Mekong River ◽

River Drainage ◽

Dorsal Fin ◽

A New Species

Bangana brevirostris, new species, is described from the Lancang-Jiang in Yunnan, Southwest China. It can be distinguished from all other congeners by the following combination of characters: a pair of minute rostral barbels; mental groove short and shallow; dorsal fin with 12–13 branched rays; 42–44 lateral line scales; eye large, its diameter 28.1–32.9 % of head length; snout short, its length 25.5–32.7 % of head length. It shares the same postlabial groove-type with Bangana dero and B. devdevi, which makes them very different from other congeners.

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Description of a new species of giant guitarfish, Glaucostegus younholeei sp. nov. (Rhinopristiformes: Glaucostegidae) from the northern Bay of Bengal, Bangladesh

Zootaxa ◽

10.11646/zootaxa.4995.1.7 ◽

2021 ◽

Vol 4995 (1) ◽

pp. 129-146

Author(s):

KAZI AHSAN HABIB ◽

MD JAYEDUL ISLAM

Keyword(s):

New Species ◽

Dna Barcode ◽

Dorsal Surface ◽

Dorsal Fin ◽

Total Length ◽

Interorbital Space ◽

Development Corporation ◽

Mouth Width ◽

Northern Bay Of Bengal ◽

A New Species

A new species of giant guitarfish, Glaucostegus younholeei sp. nov., is described from 13 specimens, 730–933 mm total length, collected from fish landing center of Bangladesh Fisheries Development Corporation in Cox’s Bazar district of Bangladesh. The new species is distinguished from congeners in having the following combination of characters: Body brownish or greyish in color with a narrowly wedge-shaped disc, and long narrow bluntly pointed snout (angle 31–40°), and broad oblique nostrils with the narrow anterior opening. Nostrils about half of the mouth width, subequal (0.98–1.33) to internasal width; ~55–57 nasal lamellae; anterior nasal flaps slightly penetrating into internasal space, their interspace 2.20– 2.61 in length of the posterior nasal aperture. Orbit very small in adults, diameter 8.19–11.62 in preorbital length, 2.25–2.69 in interorbital space. Rostral ridges almost joined along their entire length; margin of cranium sharply demarcated before eyes. Spiracular folds very short and widely separated. Skin rough, densely covered with small denticles, more coarsely granular on the dorsal surface than ventrally, enlarged between orbits and in a distinct band between nape and first dorsal fin. Tail relatively longer, length 1.15–1.48 in disc length; dorsal fins narrowly spaced, interspace 1.32–2.11 in base length of the first dorsal fin. Clasper length in adult male 4.37–5.70 in total length. Phylogenetic analysis of DNA barcode sequences also shows the clear divergence of Glaucostegus younholeei from other congeneric species obtained from GenBank. A key is provided to the 8 known members including new species of the genus Glaucostegus.

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A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar river, Orinoco river Basin, Colombia

Neotropical Ichthyology ◽

10.1590/s1679-62252012000300004 ◽

2012 ◽

Vol 10 (3) ◽

pp. 519-525 ◽

Cited By ~ 1

Author(s):

César Román-Valencia ◽

Carlos A. García-Alzate ◽

Raquel I Ruiz-C ◽

C Donald ◽

B Taphorn

Keyword(s):

New Species ◽

Lateral Line ◽

River System ◽

First Record ◽

Dorsal Fin ◽

Fin Rays ◽

Adipose Fin ◽

A New Species ◽

Pectoral Fin Rays ◽

Pelvic Fin

A new Tyttocharax species from the Güejar River system, near the Macarena Mountains in Colombia is described. This is the first record for the genus from the Orinoco basin. The combination of the following characters distinguish Tyttocharax metae from its congeners: presence of bony hooks on the pectoral and caudal-fin rays; bony hooks on the anal-fin rays larger than those on the pelvic-fin rays; pectoral-fin rays i,5-6,i; presence of three unbranched dorsal-fin rays; absence of an adipose fin; four scales rows between the anal-fin origin and the lateral line; and four scale rows between the pelvic-fin and the lateral line. Ecological characteristics of the habitat of the new species are also presented.

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Channa pardalis, a new species of snakehead (Teleostei: Channidae) from Meghalaya, northeastern India

Journal of Threatened Taxa ◽

10.11609/jott.2168.8.3.8583-8589 ◽

2016 ◽

Vol 8 (3) ◽

pp. 8583 ◽

Cited By ~ 4

Author(s):

J.D. Marcus Knight

Keyword(s):

New Species ◽

Lateral Line ◽

The Body ◽

Colour Pattern ◽

Northeastern India ◽

Dorsal Fin ◽

Black Spots ◽

Fin Rays ◽

Orbital Region ◽

A New Species

Channa pardalis, a new species of snakehead, is described from Khasi Hills, Meghalaya, northeastern India. This species can be distinguished from its congeners by a unique colour pattern consisting of numerous large black spots on the post-orbital region of the head, opercle and body; a broad white and black margin to the dorsal, anal and caudal fins; 36–37 dorsal fin rays; 24–25 anal fin rays; 44–45 pored scales on the body and two scales on the caudal fin base; 4½ scales above lateral line and 6½ scales below lateral line; 45 vertebrae and the palatine with two rows of teeth: outer row with numerous minute teeth and inner row with short, stout inward curved teeth.

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New species of the amphiliid catfish genera Amphilius, Doumea and Phractura and the taxonomy of Paramphilius from West Central Africa (Siluriformes, Amphiliidae)

Zootaxa ◽

10.11646/zootaxa.1578.1.2 ◽

2007 ◽

Vol 1578 (1) ◽

pp. 41-68 ◽

Cited By ~ 5

Author(s):

PAUL H. SKELTON

Keyword(s):

New Species ◽

Central Africa ◽

River System ◽

Colour Pattern ◽

Small Species ◽

Caudal Peduncle ◽

Distribution Maps ◽

Dorsal Fin ◽

West Central ◽

Unique Pair

A recent review of the amphiliid fishes of West Central Africa (WCA) indicates the presence of several described and undescribed species in different genera. Known amphiliines include three species of Amphilius Günther, one species of Paramphilius Pellegrin and three doumeine species in two genera, Doumea Sauvage and Phractura Boulenger. The known Amphilius from the WCA include A. longirostris (Boulenger, 1901), A. pulcher Pellegrin, 1929, and A. nigricaudatus Pellegrin, 1909. Seven species new to science include Amphilius dimonikensis, a small species with a banded colour pattern, described from 6 specimens from the Kouilou River system in Congo; Amphilius caudosignatus, a very small species with a unique caudal fin coloration, described from 3 specimens from the Ogowe River system in Gabon; Amphilius korupi, a dark brown species with a short head, eyes advanced and long oral barbels, described from 43 specimens taken from the Cross, Ndian and Akpa-Yafe River systems in Cameroon; Amphilius mamonekenensis, distinguished by its light spotted appearance, described from 18 specimens taken from the Kouilou River system in Congo; Doumea gracila, a large robust species but with a relatively slender caudal peduncle, described from 44 specimens from the Lobé, and Lokoundjé rivers, Cameroon; Doumea sanaga, with the dorsal fin relatively far back and a long slender caudal peduncle, described from 32 specimens taken from the Sanaga River system, Cameroon; and Phractura stiassny, described from a single specimen with a unique pair of neural spines before the dorsal fin from the Nyanga River in Gabon. In addition Amphilius baudoni Pellegrin is assigned to Paramphilius, with Paramphilius goodi Harry, 1953, considered as a junior synonym. Distribution maps for the new species are given.

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Schistura tenebrosa, a new species of loach from the Kwai Noi River system, Mae Khlong basin, Thailand (Teleostei: Nemacheilidae)

Zootaxa ◽

10.11646/zootaxa.3586.1.8 ◽

2012 ◽

Vol 3586 (1) ◽

pp. 69 ◽

Cited By ~ 1

Author(s):

PUNNATUT KANGRANG ◽

LAWRENCE M. PAGE ◽

F. WILLIAM H. BEAMISH

Keyword(s):

New Species ◽

Lateral Line ◽

River System ◽

Color Pattern ◽

The Body ◽

Dorsal Fin ◽

Small Streams ◽

A New Species ◽

Pelvic Fin ◽

Brown Color

A new species of Schistura is described from the Kwai Noi, Mae Khlong basin, in the Thong Pha Phum District ofKanchanaburi Province in western Thailand. The species is distinguished from all other species of Schistura by a uniformdusky brown color pattern without marks on the dorsum or side of body and with many conspicuous supplementaryneuromasts along the lateral line and on the head. It is further distinguished from other species of Schistura lacking markson the body by its dark brown color, an incomplete lateral line extending only to beneath the dorsal fin, and the origin ofthe dorsal fin located above the origin of the pelvic fin. The species is small, reaching only 46.0 mm SL, 55.1 mm TL, and inhabits shallow gravel and rubble riffles in small streams.

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Boraras naevus, a new species of miniature and sexually dichromatic freshwater fish from peninsular Thailand (Ostariophysi: Cyprinidae)

Zootaxa ◽

10.11646/zootaxa.3002.1.4 ◽

2011 ◽

Vol 3002 (1) ◽

pp. 45 ◽

Cited By ~ 1

Author(s):

KEVIN W. CONWAY ◽

MAURICE KOTTELAT

Keyword(s):

New Species ◽

Freshwater Fish ◽

Colour Pattern ◽

Sexually Dimorphic ◽

Caudal Fin ◽

Dorsal Fin ◽

Fin Ray ◽

A New Species ◽

Lateral Scale ◽

Pelvic Fin

Boraras naevus, new species, is described from peninsular Thailand. It is distinguished from other congeners by features of its sexually dimorphic colour pattern, principal caudal-fin, pelvic-fin and branched dorsal-fin ray counts, lateral scale row counts, and a number of osteological features.

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Pseudochromis stellatus, a new species of dottyback from Indonesia (Teleostei: Pseudochromidae)

Zootaxa ◽

10.11646/zootaxa.4338.2.7 ◽

2017 ◽

Vol 4338 (2) ◽

pp. 333

Author(s):

ANTHONY C. GILL ◽

GERALD R. ALLEN ◽

MARK V. ERDMANN

Keyword(s):

New Species ◽

Lateral Line ◽

The Body ◽

Colour Pattern ◽

Dorsal Fin ◽

West Papua ◽

Fin Rays ◽

A New Species ◽

Pectoral Fin Rays ◽

Pelvic Fin

The Pseudochromis reticulatus complex is diagnosed to include species of Pseudochromis with the combination of a pointed caudal fin (rounded with middle rays produced), a reticulated colour pattern on the upper part of the body, dorsal-fin rays modally III,26, anal-fin rays modally III,15, and pectoral-fin rays modally 18. Members of the complex include P. reticulatus Gill & Woodland, P. pictus Gill & Randall, P. tonozukai Gill & Allen, P. jace Allen, Gill & Erdmann and P. stellatus new species. The last-named is herein described from six specimens from Batanta and Batu Hitam in the Raja Ampat Islands, West Papua, Indonesia. It is distinguished from other members of the complex in live coloration, and in having higher mean numbers of scales in lateral series and of anterior lateral-line scales (36–38 and 29–32, respectively), and a deeper body as measured from the dorsal-fin origin to pelvic-fin origin (31.8–33.5 % SL).

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