acerus, Paracrossochilus Inger [R. F.] & Chin [P. K.] 1962:100, Fig. 47 [Fieldiana Zoology v. 45; ref. 12303] Sungei Dapu River, small tributary of the Baleh River, Third Division, Sarawak state, Borneo, East Malaysia. Holotype: FMNH 68240. Paratypes: Banarescu coll. [ex FMNH 68241] (3); FMNH 44783 (2), 45854-55 (2, 2), 68241-46 (450 or 473, 101 or 9, 10, 2, 6), 68582 (3); ZRC 942 (5). Type catalog: Alfred 1970:71 [ref. 23931], Ibarra & Stewart 1987:63 [ref. 12367]. •Valid as Paracrossochilus acerus Inger & Chin 1962 -- (Bănărescu 1986:157 [ref. 8112], Roberts 1989:57 [ref. 6439], Kottelat et al. 1993:41 [ref. 23448], Kottelat & Lim 1996:232 [ref. 23210], Doi 1997:10 [ref. 22832], Martin-Smith & Tan 1998:583 [ref. 23647], Parenti & Lim 2005:183 [ref. 28285], Kottelat 2013:138 [ref. 32989], Sulaiman et al. 2018:29 [ref. 35802], Kottelat 2020:169 [ref. 37410]). Current status: Valid as Paracrossochilus acerus Inger & Chin 1962. Cyprinidae: Labeoninae. Distribution: Borneo. Habitat: freshwater.