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Ompok argestes, a new species of silurid catfish endemic to Sri Lanka (Teleostei: Siluridae)

机译:Ompok gest塞,这是斯里兰卡特有的sil属fish鱼的一种新物种(Teleostei:Sil科)

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摘要

Ompok argestes, a new species of silurid catfish, is described from the southwestern lowlands of Sri Lanka. The new species is distinguished from all other species of Ompok in the Indian subcontinent by a combination of the following characters: body color pattern mottled; predorsal profile uniformly convex; maxillary barbels reach or extend slightly beyond base of dorsal fin; eye diameter 14.2-17.1% head length ( HL); body depth at anus 19.8-22.3% standard length ( SL); head width 14.3-16.8% SL; caudal peduncle depth 5.6-6.5% SL. Callichrous ceylonensis Gnther is shown to be a valid species that is apparently restricted to Sri Lanka, distinguished by a combination of the following characters: distinct concavity in predorsal profile; origin of pelvic fin beneath or slightly posterior to the origin of the dorsal fin; maxillary barbels 108-166 % HL; mandibular barbels 16.1-33.7 % HL; and 58-66 anal-fin rays.
机译:斯里兰卡西南低地描述了Ompok sil鱼,一种mp鱼mp鱼的新物种。该新物种与印度次大陆的所有其他Ompok物种的区别在于,它们具有以下特征:前背轮廓均匀凸;上颌骨的触须达到或稍超过背鳍基部;眼直径14.2-17.1%头长(HL);肛门深度为标准长度的19.8-22.3%(SL);头宽14.3-16.8%SL;尾柄深度5.6-6.5%SL。已证明,Callichrous ceylonensis Gnther是有效的物种,显然只限于斯里兰卡,其特征在于以下特征的组合:背侧轮廓明显凹陷;骨盆鳍起点在背鳍起点以下或稍在后鳍起点;上颌bar骨HL 108-166%HL;下颌bar骨HL 16.1-33.7%;和58-66的肛门鳍射线。

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