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Article
Published: 2017-10-19

Physoschistura harkishorei, a new species of loach from Arunachal Pradesh, north-eastern India (Teleostei: Nemacheilidae)

Fishery and Aquatic Biology Laboratory, Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh:791112, Arunachal Pradesh, India Center with Potential for Excellence in Biodiversity, Rajiv Gandhi University, Rono Hills, Doimukh:791112, Arunachal Pradesh, India
Center with Potential for Excellence in Biodiversity, Rajiv Gandhi University, Rono Hills, Doimukh:791112, Arunachal Pradesh, India
Pisces New nemacheilid Dibang River Lohit River Brahmaputra basin

Abstract

Physoschistura harkishorei, a new species of nemacheilid loach, is described from the Dibang and Lohit Rivers of Arunachal Pradesh, north-eastern India. The new species can be distinguished from all known congeners by the combination of the following characters: the second branched ray of pectoral fin with a distal filamentous extension; body colour pattern consisting of 9–10 vertically-elongated brownish spots or blotches along the flank, and 8–10 brownish saddles on back, the saddles not contiguous with the lateral blotches; lateral line complete; prominent, well-developed pelvic-fin lobe; a well-developed free posterior chamber of the air-bladder; and caudal fin with 7+8 branched rays. The new species occurs sympatrically with Physoschistura dikrongensis and P. elongata in the Brahmaputra basin.

 

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