simus, Barbus (Systomus) Sauvage [H.-E.] & Dabry de Thiersant [P.] 1874:8 [Annales des Sciences Naturelles, Paris (Zoologie et Paléontologie) (Sér. 6) v. 1 (art. 5); ref. 15665] [Probably Yangtze basin], China. Holotype (unique): MNHN 0000-7952. Type catalog: Bertin & Estève 1948:44 [ref. 19574]. •Valid as Varicorhinus simus (Sauvage & Dabry de Thiersant 1874) -- (Wu et al. 1977:308 [ref. 4807], Chu & Cui in Chu & Chen 1989:215 [ref. 13584], Zheng et al. 1989:190 [ref. 21202], Chen et al. in Pan et al. 1991:164 [ref. 23876], Zhu 1995:61 [ref. 25213], Chen in Chen 1998:160 [ref. 23556]). •Valid as Onychostoma simum (Sauvage & Dabry de Thiersant 1874) (also seen as simus or sima) -- (Bănărescu 1971:243 [ref. 7666], Ding 1994:332 [ref. 21531], Shan et al. in Yue 2000:134 [ref. 25272], Tang et al. 2001:13 [ref. 25373], Zhang et al. 2016:93 [ref. 34477] with authorship as Dabry de Thiersant, Kottelat 2001:33 [ref. 25482], Xin et al. 2009:261 [ref. 30708], Kottelat 2013:130 [ref. 32989], Hoang et al. 2015:123 [ref. 33811], Song et al. 2018:161 [ref. 35890], Zhang et al. 2019:277 [ref. 36699] as sima, Guo 2021:365 [ref. 38617]). Current status: Valid as Onychostoma simum (Sauvage & Dabry de Thiersant 1874). Cyprinidae: Acrossocheilinae. Distribution: Yangtze River basin, China. Habitat: freshwater.