daos, Sinilabeo tonkinensis Nguyen [V. H.] in Nguyen & Ngô 2002:495, Fig. 251 [Freshwater fishes of Viet Nam. Volume I. Family Cyprinidae v. 1; ref. 28301] Sông Dà, Lai Chau, Viêt Nam. Holotype: VNCNTTS I: H.01.92.10.01. Paratypes: VNCNTTS I: H.01.92.10.02 (3). •Synonym of Sinilabeo tonkinensis (Pellegrin & Chevey 1934), but a valid subspecies daos Nguyen 2002. •Synonym of Bangana tonkinensis (Pellegrin & Chevey 1934) -- (Kottelat 2013:76 [ref. 32989] with question). •Valid as Vinalabeo daos (Nguyen 2002) -- (Nguyen et al. 2016:143 [ref. 35165]). •Possibly valid as Altigena daos (Nguyen 2002). •Synonym of Altigena tonkinensis (Pellegrin & Chevey 1934) -- (Endruweit 2025:98 [ref. 42401]). Current status: Synonym of Altigena tonkinensis (Pellegrin & Chevey 1934). Cyprinidae: Labeoninae. Habitat: freshwater.