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aqua 24(4)_Channa quinquefasciata

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SINGLE PAPER

Volume 24, Issue 4 – 05 November 2018


Jayasimhan Praveenraj, Arumugam Uma, John Daniel Marcus Knight, Nallathambi Moulitharan,
Shankar Balasubramanian, Kinattumkara Bineesh and Heiko Bleher: Channa quinquefasciata, a new speciesof snakehead (Teleostei: Channidae) from Torsa River, North Bengal, India, pp.141-15

Description

SINGLE PAPER

Volume 24, Issue 4 – 05 November 2018


Jayasimhan Praveenraj, Arumugam Uma, John Daniel Marcus Knight, Nallathambi Moulitharan,
Shankar Balasubramanian, Kinattumkara Bineesh and Heiko Bleher: Channa quinquefasciata, a new speciesof snakehead (Teleostei: Channidae) from Torsa River, North Bengal, India, pp.141-15

Abstract


Channa quinquefasciata, a new species of snakehead from Torsa River, West Bengal, differs from all congeners by possessing a unique greyish to chrome-yellow body colour, with five black oblique bands horizontally along the upper half of the lateral body, dorsal-fin membrane with three rows of multiple black to brown oblong spots running horizontally along the whole fin length, and caudal-fin membrane alternating with <-shaped black spots arranged transversely. Genetically, the closest congener of C. quinquefasciata is C. stewartii from which it differs by K2-P sequence distance of 6.8-7.0%, and morphologically by the absence of numerous black spots on the flanks vs. presence, fewer dorsal-fin rays (33-35 vs. 38-40), fewer caudalfin rays (12 vs. 13), and fewer mid-row lateral-line scales (10-13 vs. 14-16).