New Amblyceps

[Silurus]

Abujam, S, L Tamang, G Nimasow & DN Das, 2022. Amblyceps motumensis, a new species of hillstream catfish (Teleostei: Siluriformes: Amblycipitidae) from eastern Himalaya, India. Aqua 27: 137–148.

Abstract

Amblyceps motumensis, a new species of South Asian amblycipitid catfish, is described herein based on 3 gravid females (48.0-50.5 mm SL) from the upper Brahmaputra River drainage in eastern Arunachal Pradesh, northeastern India. The new species is readily distinguished from A. apangi, A. torrentis, A. cerinum, A. murraystuarti, A. yunnanensis, A. improcerum and A. laticeps in having the caudal fin deeply forked (vs. truncate or emarginate; weakly forked in A. improcerum and A. laticeps), the anus considerably closer to the anal fin (vs. pelvic-fin) origins, as a result tip of the last adpressed pelvic fin not exceeding (vs. exceeding) beyond anus. The new species is distinguished from other congeners by the following combination of characters: jaws length equal, tip of adpressed dorsal fin not reaching vertical through pelvic-fin origin, pinnate like rays on the caudal fin procurrent and unbranched-principal rays present, but hooks on the lepidotrichia of the median rays absent, adipose fin incised posteriorly and not confluent with dorsal procurrent part of caudal fin.

[bekateen]

Amblyceps motumensis