The identity of the Sri Lankan (Teleostei, Cyprinidae).

Morphological and molecular analyses of specimens representative of the geographic range of the cyprinid genus in Sri Lanka suggest the presence of only a single species in the island, for which the name Jordan & Starks, 1917, is available. is a species endemic to Sri Lanka, distributed across the lowlands of both of the island's main climatic zones. It is distinguished from all other species of , including the three species recorded from peninsular India (, , and ), by a suite of characters that includes a body depth of 26.9-31.2% of the standard length (SL), 42-56 scales in the lateral series (of which usually 8-16 are pored), 20-24 circumpeduncular scales, 14-17 scale rows between the origins of the dorsal and pelvic fins, a dorsal-fin height of 21.1-27.6% SL, 18-19 caudal vertebrae and an eye diameter of 22.7-30.5% of the head length. differs from and by uncorrected pairwise genetic distances of more than 9% and 6%, respectively, for the mitochondrial cytochrome oxidase subunit 1 (COI) gene.