Abstract
Osteobrama cunma, originally described from Moulmein, Myanmar, has so far been considered a subspecies of Osteobrama cotio. Based on examination of specimens from Brahmaputra and Chindwin basins, O. cunma has now been given species status. The species differs from its nearest congener, O. cotio, in having less numbers of branched anal fin rays (26 vs. 31); lateral line scales (48 vs. 66); predorsal scales (20 vs. 27); scale rows between dorsal fin base and lateral line (9 vs. 14); scale rows between pelvic fin base and lateral line (8 vs.12) and circumpeduncular scales (20 vs. 28). Osteobrama feae Vinciguerra, originally known from upper Myanmar has been collected from the Maklang river of Manipur, and is reported as a new record for India. Brief descriptions of O. belengeri, O. cotio, O. cunma and O. feae are given in this paper.