fontouensis, Onychostoma laticeps var. Tchang [T.-L.] 1930:85 [Bulletin du Muséum National d'Histoire Naturelle (Série 2) v. 2 (no. 1); ref. 16211] Fontou, Szechuan, China. Holotype: MNHN 1934-0017. Type catalog: Bertin & Estève 1948:45-46 [ref. 19574] as foutouensis. •Synonym of Varicorhinus simus (Sauvage & Dabry de Thiersant 1874) -- (Wu et al. 1977:308 [ref. 4807]). •Synonym of Onychostoma sima (Sauvage & Dabry de Thiersant 1874) -- (Ding 1994:332 [ref. 21531], Zhang et al. 2016:93 [ref. 34477], Zhang et al. 2019:277 [ref. 36699]). •Synonym of Onychostoma simum (Sauvage & Dabry de Thiersant 1874) -- (Kottelat 2013:130 [ref. 32989]). Current status: Synonym of Onychostoma simum (Sauvage & Dabry de Thiersant 1874). Cyprinidae: Acrossocheilinae. Habitat: freshwater.