microstomus, Gymnostomus Mai [D. Y.] (ex Hao & Hoa) 1978:47 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Na-Rìììi River and Ngân Son River, northern Thailand. Syntypes: ?DVZUT. Apparently unavailable from Hao & Hoa 1969 according to Kottelat 1989:1102 [ref. 14361], but Kottelat 2001 [ref. 25482] reversed this interpretation and dated to Nguyen & Doan [= Hao & Hoa] 1969. Microstomus is a latinized Greek word, to be treated as an adjective. •See account of Varicorhinus microstomus Nguyen & Doan 1969. •Valid as Gymnostomus microstomus Mai 1978 -- (Endruweit 2024:15 [ref. 41040]). •Questionably in the synonymy of Onychostoma lepturus (Boulenger 1900). •Questionably in the synonymy of Scaphostoma lepturus (Boulenger 1900). Current status: Synonym of Scaphostoma lepturus (Boulenger 1900). Cyprinidae: Acrossocheilinae.