obscurus, Acrochordonichthys Popta [C. M. L.] 1904:187 [Notes from the Leyden Museum v. 24 (no. 4) (art. 6) (for Oct. 1902); ref. 3547] Bongan River, Putero, Borneo, Indonesia. Holotype: RMNH 7556. Type catalog: Ferraris 2007:13 [ref. 29155]. •Questionably a synonym of Acrochordonichthys melanogaster (Bleeker 1854) -- (Roberts 1989:138 [ref. 6439]). •Valid as Acrochordonichthys obscurus Popta 1904 -- (Martin-Smith & Tan 1998:591 [ref. 23647]). •Synonym of Acrochordonichthys rugosus (Bleeker 1846) -- (Ng & Ng 2001:412 [ref. 25771], Ferraris 2007:13 [ref. 29155], Kottelat 2013:218 [ref. 32989]). Current status: Synonym of Acrochordonichthys rugosus (Bleeker 1846). Akysidae: Parakysinae. Habitat: freshwater.