chaperi, Diastatomycter Vaillant [L. L.] 1891:182 [2] [Bulletin de la Société philomathique de Paris (8th Série) v. 3 (no. 4); ref. 4497] Knapei River, near Smitow, Kapuas basin, Borneo. Holotype (unique): MNHN 1891-0458. Type catalog: Bertin & Estève 1950:22 [ref. 19575], Ferraris 2007:368 [ref. 29155]. On p. 2 of separate. Species also described as new in Vaillant 1893:61 [ref. 4485]. •Valid as Hemisilurus chaperi (Vaillant 1891) -- (Burgess 1989:85 [ref. 12860]). •Synonym of Hemisilurus heterorhynchus (Bleeker 1854) -- (Bornbusch & Lundberg 1989:434 [ref. 12543], Roberts 1989:145 [ref. 6439], Burgess & Finley 1996:164 [ref. 22901], Ferraris 2007:368 [ref. 29155], Kottelat 2013:233 [ref. 32989]). Current status: Synonym of Hemisilurus heterorhynchus (Bleeker 1854). Siluridae. Habitat: freshwater.