daon, Sinogastromyzon Nguyen [V. H.] 2005:605, Fig. 35 [Freshwater fishes of Vietnam v. 2; ref. 29730] Nâm So, Phong Thô, Lai Châu, Vietnam. Holotype: NCNTTS I (lost). Paratypes: (1) (lost). Authorship in caption differs. Types at RIA 1 [= NCNTTSI] are lost according to Endruweit 2014:144 [ref. 33205]. •Valid as Sinogastromyzon daon Nguyen 2005 -- (Kottelat 2012:55 [ref. 32367], Kottelat 2013:190 [ref. 32989] with question). Current status: Valid as Sinogastromyzon daon Nguyen 2005. Balitoridae. Distribution: Nâm So, Phong Thô, Da river system, Lai Châu, Vietnam. Habitat: freshwater.