A new species of Trimma (Pisces: Gobiidae) from the northern Palauan Islands, western Pacific Ocean

Zootaxa ◽  
2020 ◽  
Vol 4808 (3) ◽  
pp. 582-588
Author(s):  
RICHARD WINTERBOTTOM
Keyword(s):  
New Species ◽  
Dark Spot ◽  
Western Pacific Ocean ◽  
Posterior Portion ◽  
Dorsal Fin ◽  
Yellow Body ◽  
Fin Ray ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of Trimma is described from the northern Palaun islands. Trimma kalum n. sp. lacks scales on the cheeks, opercle and nape, has an elongate second spine of the first dorsal fin, reaching posteriorly to the base of the 2nd–10th ray of the second dorsal fin when adpressed, 17–18 pectoral-fin rays with 12–13 branched rays in the middle of the fin, a single dichotomous branch point in the 5th pelvic-fin ray, which is 51–75% the length of the 4th ray, a very well developed dermal crest in the midline between the base of the first dorsal spine and the posterior interorbital region, a U-shaped interorbital trench with no fleshy median ridge, a poorly developed postorbital trench ending between the 4th to 5th papillae in row p, which has 6 papillae in total, and there are 5 papillae in row c beneath the eye. When live and freshly collected, the species is very similar in appearance to T. sheppardi, with an overall yellow body, three yellow bars across the cheek, and a double dark spot above the posterior portion of the opercle. 

A new species of Trimma (Pisces; Gobiidae) from the South-West Islands of Palau, western Pacific Ocean

Zootaxa ◽  
2018 ◽  
Vol 4370 (2) ◽  
pp. 123
Author(s):  
RICHARD WINTERBOTTOM
Keyword(s):  
New Species ◽  
Narrow Slit ◽  
Western Pacific Ocean ◽  
The South ◽  
Gill Rakers ◽  
South West ◽  
Fin Ray ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of Trimma is described from South-West Islands of Palau. Trimma hamartium n. sp. lacks scales on the cheeks and opercle, has 8–9 scales in the predorsal midline, 17–19 pectoral-fin rays with 5–10 branched rays in the middle of the fin, an unbranched 5th pelvic-fin ray that is 51–64% the length of the 4th ray, 17–19 gill rakers on the outer surface of the first gill arch, an U-shaped interorbital trench with a narrow, slit-like postorbital trench ending at the last papilla in row p, and has 6 papillae in row c beneath the eye. When freshly collected, the species is very similar in appearance to T. preclarum, with which it is syntopic at three of the more northern islands of the South-West Islands. 

A new species of Trimma (Pisces: Gobiidae) from western Thailand, north-eastern Indian Ocean

Zootaxa ◽  
2021 ◽  
Vol 4915 (2) ◽  
pp. 264-272
Author(s):  
RICHARD WINTERBOTTOM
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Median Ridge ◽  
Dorsal Fin ◽  
Fin Ray ◽  
North Eastern ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of Trimma is described from the islands just off the Thailand coast near Phuket. Trimma ukkriti n.sp. lacks scales on the cheek and opercle, but has ctenoid scales in the midline of the nape, has an elongate second spine of the first dorsal fin which reaches posteriorly to between the base of the spine and the base of the 4th ray of the second dorsal fin when adpressed, 19–20 pectoral-fin rays with 6–13 branched rays in the middle of the fin, an unbranched 5th pelvic-fin ray, which is 48–67% the length of the 4th ray, a U-shaped interorbital trench with no fleshy median ridge, a poorly developed postorbital trench ending at the 5th papilla in row p (which has 6 papillae in total), and row c beneath the eye consists of 6 papillae. When live and freshly collected, the species is very similar in appearance to T. okinawae and T. readerae, with orange to red spots on the head and body. 

Navigobius asayake, a new species of ptereleotrine goby (Gobioidei: Microdesmidae) from Kagoshima, southern Japan

Zootaxa ◽  
2018 ◽  
Vol 4526 (3) ◽  
pp. 373
Author(s):  
MAKOTO OKAMOTO ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dorsal Fin ◽  
Southern Japan ◽  
Fin Rays ◽  
Eye Diameter ◽  
Yellow Stripe ◽  
Fin Length ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of ptereleotrine dartfish, Navigobius asayake, is described based on four specimens (45.0–52.1 mm in standard length: SL) collected from off the Satsuma Peninsula and Tanegashima island, Kagoshima, southern Japan. It is distinguished from other congeners by the following combination of characters: second dorsal-fin rays I, 18–19; anal-fin rays I, 19; pectoral-fin rays 21–22; gill rakers 5–6 + 13–15; head length 25.1–26.4% SL; eye diameter 8.6–10.0% SL; pelvic-fin length 15.2–16.1% SL; and a well-developed yellow stripe extending from behind upper part of eye to beneath first dorsal fin. 

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.

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

2012 ◽  
Vol 10 (3) ◽  
pp. 519-525 ◽  
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.

Luciogobius yubai, a new species of gobioid fish (Teleostei: Gobiidae) from Japan

Zootaxa ◽  
2019 ◽  
Vol 4657 (3) ◽  
pp. 565-572
Author(s):  
YUJI IKEDA ◽  
KAZUAKI TAMADA ◽  
KENTAROU HIRASHIMA
Keyword(s):  
New Species ◽  
Posterior Part ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Eye Diameter ◽  
Dermal Flaps ◽  
Fin Length ◽  
A New Species ◽  
Pelvic Fin

A new gobioid fish Luciogobius yubai sp. nov. is described based on specimens collected from Wakayama and Shizuoka Prefectures, Japan. This species is distinguished from congeners by the following combination of characters; second dorsal-fin I, 9, anal-fin I, 10, pectoral-fin 17 or 18, vertebrate number 16+19=35, the first space between anterior two pterygiophores of second dorsal-fin placed the neural spines of vertebrae 17–18 or 17, four to seven developed dermal flaps under the eye longitudinally, posterior part of eye ridge protruded posteriorly, pectoral-fin with a long uppermost free ray, eye diameter 7.3–10.6 % of head length, pectoral-fin length 14.4–16.9 % of standard length (SL) , second dorsal-fin length 9.7–11.8 % SL, anal-fin ray length 9.1–11.1 % SL, pelvic-fin length 7.3–10.8 % SL, head and body with brownish orange coloration when alive or fresh.

Trichomycterus argos (Teleostei: Siluriformes: Trichomycteridae), a new species from the Doce River Basin, Eastern Brazil

Zootaxa ◽  
2012 ◽  
Vol 3352 (1) ◽  
pp. 60 ◽  
Author(s):  
ANTÔNIO QUEIROZ LEZAMA ◽  
MAURO L. TRIQUES ◽  
PATRÍCIA S. SANTOS
Keyword(s):  
New Species ◽  
Southeastern Brazil ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Eastern Brazil ◽  
Fin Ray ◽  
Eye Diameter ◽  
Doce River ◽  
A New Species ◽  
Pelvic Fin

Trichomycterus argos, new species, is described from the Rio Doce basin, situated in the Serra do Brigadeiro (part of theSerra da Mantiqueira) range, southeastern Brazil. The new species is diagnosed by the following characteristics: presenceof six branched rays in the pectoral fin; presence of pelvic fins; tip of nasal barbels extending to posterior border of oper-cular plate of odontodes; presence of a large foramen for ramus lateralis accessorius facialis, visible in dorsal view, in theparietosupraoccipital bone; transverse and straight border between the parietosupraoccipital and frontal bones; pectoral-fin ray prolonged as a filament; body covered with spots that seldom attain eye diameter; pelvic-fin origin placed one or two ocular diameters anterior to dorsal-fin origin; abscence of spots fused as elongated marks on dorsum or flank.

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

Zootaxa ◽  
2011 ◽  
Vol 3002 (1) ◽  
pp. 45 ◽  
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.

scholarly journals A new species of Metzia (Cypriniformes: Cyprinidae) from Northern Laos

Zootaxa ◽  
2012 ◽  
Vol 3586 (1) ◽  
pp. 264 ◽  
Author(s):  
KOICHI SHIBUKAWA ◽  
PHOUVIN PHOUSAVANH ◽  
KONEUMA PHONGSA ◽  
AKIHISA IWATA
Keyword(s):  
New Species ◽  
Cyprinid Fish ◽  
Dorsal Fin ◽  
Line Scale ◽  
Fin Ray ◽  
Fin Rays ◽  
Predorsal Scale ◽  
A New Species ◽  
Diagnostic Traits ◽  
Pelvic Fin

A new cyprinid fish, Metzia bounthobi, is described on the basis of 18 specimens (including 10 specimens in type series)from the Mekong River basin in Phongsaly and Luang Prabang Provinces, northern Laos. The species is distinguishedfrom congeners by having the following diagnostic traits: 18–20 branched anal-fin rays (vs. 10–18 in the others); 49–55lateral-line scale rows (vs. 35–48); 33–36 predorsal scale rows (vs. 15–20); 20–22 circumpeduncular scale rows (vs.14–18); 8–10 gill rakers on outer surface of first gill arch (vs. 12–18). The new species also resembles species of Hemic-ulterella, Ischikauia and at least some species of Anabarilius, in sharing a sharp keel developed only between the base ofthe pelvic fin and anus, soft last unbranched dorsal-fin ray, and air bladder composed of two chambers; however, M.bounthobi differs in having a considerably rounded snout (vs. pointed in Hemiculterella, Ischikauia and Anabarilius),18–20 branched anal-fin rays (vs. 8–17 in Hemiculterella, Ischiakuia and Anabarilius), 49–55 lateral-line scale rows (vs.more than 58 in Ischikauia and Anabarilius, except for A. transmontana with 54–57), air bladder with rounded posteriorend (vs. posterior end with a small lobe at least in Hemiculterella) and 39–40 vertebrae (vs. 40–43, 42–43 and 43–48 in Hemiculterella, Ischikauia and Anabarilius, respectively).

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

Zootaxa ◽  
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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