Notes on the identity of Hemibagrus elongatus (Günther, 1864) and other east Asian species allied to H. Guttatus (La Cepède, 1803) (Teleostei: Bagridae)

Abstract

The identity of the bagrid catfish Hemibagrus elongatus (Günther, 1864) is clarified, and the holotype is redescribed and figured for the first time. The supposed type locality of the species (Singapore) is disputed and the type specimen is believed to have originated from China instead. The Chinese and Vietnamese species of Hemibagrus are also reviewed, and problems with their taxonomy and nomenclature discussed. Hemibagrus guttatus (La Cepède, 1803) is regarded here as a junior subjective synonym of H. elongatus (Günther, 1864).