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Creteuchiloglanis arunachalensis, a new species of glyptosternine catfish (Teleostei: Sisoridae) from Arunachal Pradesh, northeastern India

Home Forums Ichthyology Creteuchiloglanis arunachalensis, a new species of glyptosternine catfish (Teleostei: Sisoridae) from Arunachal Pradesh, northeastern India

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    Matt
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    Ichthyological Research August 2014

    Abstract

    A new glyptosternine catfish, Creteuchiloglanis arunachalensis is described on the basis of a single specimen collected from the upper Brahmaputra River drainage, northeastern India. The new species is distinguished from its congeners by the following characters: shorter adipose-fin base (25.9 vs. 26.2–37.3 % standard length; SL) except C. longipectoralis; shorter maxillary barbel (71.2 vs. 75.2–99.8 % head length) except C. macropterus; and longer prepelvic (45.4 vs. 36.4–44.9 % SL) exceptC. brachypterus. It can be further differentiated by a combination of the following characters: pectoral fin not reaching pelvic-fin origin; pelvic fin not reaching at vertical through adipose-fin origin; pale patches on body except occipital region; absence of milky-white patch on the base of posterior end of maxillary barbel; longer post adipose distance (10.1 % SL); tip of rectal lobe obtusely rounded; caudal-fin lobes equal; posterior margin of caudal fin slightly convex; adipose-fin separate from caudal fin; and caudal fin with broad bean-shaped medial band.

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