fuscus, Akysis Ng [H. H.] & Kottelat [M.] 1996:20, Fig. 1 [Ichthyological Exploration of Freshwaters v. 7 (no. 1); ref. 22212] Kalimantan Barat, Danau Sentarum area, Sungai Hulu Leboyan at Keluwin, Borneo. Holotype: MZB 5934. Paratypes: CMK 11712 (8), MZB 5935 (3), ZRC 38840 (4). Type catalog: Ferraris 2007:16 [ref. 29155], Ng & Kim 2008:8 [ref. 29920]. •Valid as Akysis fuscus Ng & Kottelat 1996 -- (Burgess & Finley 1996:165 [ref. 22901], Ng & Kottelat 1998:1059 [ref. 23903], Ng & Rachmatika 1999:171 [ref. 23964], Ng & Tan 1999:362 [ref. 24159], Ng & Siebert 2004:5 [ref. 27936], Ng & Rainboth 2005:33 [ref. 28353] with author as Ng, Kottelat & Widjanarti 2005:162 [ref. 28284]). •Valid as Pseudobagarius fuscus (Ng & Kottelat 1996) -- (Ferraris 2007:16 [ref. 29155], Kottelat 2013:220 [ref. 32989], Ng & Kottelat 2021:328 [ref. 38407]). Current status: Valid as Pseudobagarius fuscus (Ng & Kottelat 1996). Akysidae: Akysinae. Distribution: Sarawak, Borneo, Indonesia. Habitat: freshwater.