2009年8月24日 星期一

Synodontis punu, 一種產自下幾內亞魚類分布地理區的倒游鯰新種

文獻來源: Vreven, E. & Milondo, L. (2009): Description of Synodontis punu, new species (Siluriformes: Mochokidae) from the Lower Guinea ichthyofaunal province (Gabon and Republic of Congo), Africa. Ichthyological Exploration of Freshwaters, 20 (2): 97-104.

Abstract
Synodontis punu, new species, is described from the Nyanga, the Niari (Kouilou) (Republic of Congo) and the Ogooué (Gabon) basins. This relatively small species (<>with which it shares the presence of a single hypertrophied opercular spine in sexually mature males and a colour pattern characterised by the presence of a pair of dark patches on the caudal fin, one on each lobe. These two characters separate both species from all congeners. Synodontis punu is distinguished from S. acanthoperca by a wider premaxilla, 24.9-32.7 % HL (mean: 29.0) [vs. 18.0-23.9 (21.1)], a greater postorbital length, 38.1-42.3 % HL (mean: 40.1) [vs. 33.7-38.2 (35.9)] and the absence of a saddle-like dark brown spot posterior to the dorsal fin (vs. presence).

圖片連結: planetcatfish (圖片顯示為其近緣種
S. acanthoperca)