eubranchus, Hypergastromyzon Roberts [T. R.] 1991:334, Fig. 1 [Japanese Journal of Ichthyology v. 37 (no. 4); ref. 20081] Batang Ai near Wong Mepal, Sarawak state, Borneo, East Malaysia. Holotype: BMNH 1984.1.15.1. Paratypes: BMNH 1984.11.15.2 (1), 1984.11.15.3 (1); CAS 55889 (1). •Valid as Hypergastromyzon eubranchus Roberts 1991 -- (Kottelat et al. 1993:54 [ref. 23448], Kottelat & Lim 1996:236 [ref. 23210], Doi 1997:19 [ref. 22832], Tan 2006:203 [ref. 28716], Kottelat 2012:64 [ref. 32367], Kottelat 2013:194 [ref. 32989]). •Valid as Engkaria eubranchus (Roberts 1991) -- (Tan 2021:353 [ref. 39615]). Current status: Valid as Engkaria eubranchus (Roberts 1991). Gastromyzontidae. Distribution: Engkari River drainage, Lupar River basin, southern Sarawak, Malaysia. Habitat: freshwater.