daduensis, Onychostoma Ding [R.-H.] 1994:336 [English p. 610], Fig. 254 [The fishes of Sichuan, China; ref. 21531] Dadu River, Ebian County, Sichuan, China. Holotype: MSINR 75015. Paratypes: MSINR 00437 (1), 75010 (1), 80101 (1), 82018 (1), 82024 (1), 82142 (1). •Valid as Onychostoma daduense Ding 1994 [often as daduensis] -- (Shan et al. in Yue 2000:140 [ref. 25272], Xin et al. 2009:261 [ref. 30708], Hoang et al. 2015:123 [ref. 33811], Zhang et al. 2016:92 [ref. 34477]). •Synonym of Onychostoma angustistomatum (Fang 1941) -- (Guo 2021:368 [ref. 38617] as angustistomata). Current status: Synonym of Onychostoma angustistomatum (Fang 1941). Cyprinidae: Acrossocheilinae. Habitat: freshwater.