dayeus, Acanthorhodeus Mai [D. Y.] 1978:187, Fig. 85 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Dáy River, Hòa-Binh, northern Vietnam. Syntypes: DVZUT. •Synonym of Acanthorhodeus polyspinus Holčík 1972 -- (Kottelat 1998:55 [ref. 23436]). •Tentative synonym of Acheilognathus polyspinus (Holčík 1972) -- (Kottelat 2001:15 [ref. 25482]). Current status: Synonym of Acheilognathus polyspinus (Holčík 1972). Acheilognathidae. Habitat: freshwater.