Rasbora rheophila, a new species of fish from northern Borneo (Teleostei: Cyprinidae)

Abstract

Rasbora rheophila, new species, is described from Borneo in Sabah (Malaysia) and northern Kalimantan Timur (Indonesia). It is distinguished from all other species of the genus by the combination of a slender body, the backward position of the dorsal fin, a rounded snout, a dark midlateral stripe from head to end of hypural plate, over the axial streak, the caudal fin with a greyish to black posterior margin, restricted to upper lobe in some populations, 14 circumpeduncular scale rows, 31-34 + 2-3 lateral line scales, and 18-19 + 18-20 = 36-38 vertebrae.