pachyderma, Acrochordonichthys Vaillant [L. L.] 1902:66, Figs. 11-13 [Notes from the Leyden Museum v. 24 (note 1); ref. 4490] Bloeoe [Bluu] River, Kapuas basin, Kalimantan Timor, Borneo, Indonesia. Holotype (unique): RMNH 7560. Type catalog: Ferraris 2007:13 [ref. 29155]. •Questionably a synonym of Acrochordonichthys melanogaster (Bleeker 1854) -- (Roberts 1989:138 [ref. 6439]). •Valid as Acrochordonichthys pachyderma Vaillant 1902 -- (Burgess 1989:118 [ref. 12860], Ng & Ng 2001:410 [ref. 25771], Ferraris 2007:13 [ref. 29155], Kottelat 2013:217 [ref. 32989]). Current status: Valid as Acrochordonichthys pachyderma Vaillant 1902. Akysidae: Parakysinae. Distribution: Borneo, Indonesia. Habitat: freshwater.