Nanobagrus torquatus, a new species of bagrid catfish, is described from the Musi drainage in southern Sumatra. Nanobagrus torquatus is distinguished from all congeners by a body color pattern consisting of a single distinct yellow/cream band around the body just behind the head (vs. three or more bands on body or body lacking distinct bands). It most closely resembles N. fuscus, which has three light bands around the body.
New taxon: Nanobagrus torquatus Thomson, López and Hadiaty