Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia

Abstract

Desmopuntius mahakamensis sp. nov., is described based on specimens from East Kalimantan, Indonesia. The new species, D. mahakamensis is distinguished from all congeners by the following combination of characters: anal-fin rays iii,5½; lateral line scales 26–27 (mode 26); predorsal scales 9–11 (mode 10); gill rakers 9–11 (mode 10); total vertebrae 29; axial streak present; presence of 5–6 black lateral stripes in adults (>30 mm SL), with stripe +1 extending from behind the gill opening along scale row 1 and reaching only to midbody, between the origin and end of the dorsal-fin base. Molecular evidence further supports the assignment of the new species in the genus Desmopuntius and its clear separation from congeners.