Species that contain: Onychostoma and gerlachi [ 5 ] records

babeensis, Varicorhinus (Onychostoma) Nguyen [V. H.] & Nguyen [T. D.] in Nguyen & Ngô 2002:414, Fig. 203 [Freshwater fishes of Viet Nam. Volume I. Family Cyprinidae v. 1; ref. 28301] Lake Ba Be, Nam Mau village; Bac Kan Province, Vietnam. Holotype (unique): DHNLTN 98.25.025. •Probably a synonym of Onychostoma gerlachi (Peters 1881) -- (Xin et al. 2009:260 [ref. 30708]). •Valid as Onychostoma babeense (Nguyen & Nguyen 2002) -- (Kottelat 2013:128 [ref. 32989] with question). Current status: Uncertain as Onychostoma babeense (Nguyen & Nguyen 2002). Cyprinidae: Acrossocheilinae. Distribution: Southeast Asia: Ba Bê, Bac Kan Province, Vietnam [if valid]. Habitat: freshwater.

gerlachi, Barbus Peters [W. (C. H.)] 1881:1034, Unnumbered plate fig. 5 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1880; ref. 3456] Hong Kong, China. Syntypes: ZMB 11327 (1). •Valid as Varicorhinus gerlachi (Peters 1881) -- (Wu et al. 1977:310 [ref. 4807], Chu & Cui in Chu & Chen 1989:216 [ref. 13584] as gerachi, Zheng et al. 1989:191 [ref. 21202], Chen et al. in Pan et al. 1991:162 [ref. 23876], Zhu 1995:61 [ref. 25213], Chen in Chen 1998:161 [ref. 23556] as gerachi). •Valid as Onychostoma gerlachi (Peters 1881) -- (Bănărescu 1971:243 [ref. 7666], Mai 1978:39 [ref. 13511], Jin in Kuang et al. 1986:122 [ref. 26639] dated 1880, Doi 1997:8 [ref. 22832], Shan et al. in Yue 2000:136 [ref. 25272], Kottelat 2001:32 [ref. 25482], Kottelat 2001:63 [ref. 25780], Hoang et al. 2015:123, 136 [ref. 33811] Zhang et al. 2016:92 [ref. 34477], Song et al. 2018:161 [ref. 35890], Fu et al. 2021:9570 [ref. 39347], Taki et al. 2021:150 [ref. 39830]). Current status: Valid as Onychostoma gerlachi (Peters 1881). Cyprinidae: Acrossocheilinae. Distribution: Southeast Asia: Chao Phraya basin, Thailand to China. Habitat: freshwater.

imberbis, Capeta macrolepis Koller [O.] 1926:121 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 63 (no. 13) (for 10 June); ref. 15797] River at Mt. Wu-tschi, Hainan Island, China. Syntypes: (3). •See Kottelat 2001:32 [ref. 25482]. •Questionably a synonym of Onychostoma gerlachi (Peters 1881) -- (Kottelat 2013:129 [ref. 32989]). Current status: Uncertain as Onychostoma gerlachi (Peters 1881). Cyprinidae: Acrossocheilinae. Habitat: freshwater.

thacbaensis, Varicorhinus (Onychostoma) Nguyen [V. H.] & Ngô [S. V.] 2002:412, Fig. 202 [Freshwater fishes of Viet Nam. Volume I. Family Cyprinidae v. 1; ref. 28301] Yen Bai Province, Lue Yen district, Phuc Loi, Ngio Thuong, Vietnam. Holotype: VNCNTTS I: H.01.73.09.01. Paratypes: VNCNTTS I: H.01.73.09.02 - H.01.73.08(or 09?).03 (5). •Probably should be regarded as a synonym of Onychostoma gerlachi (Peters 1881) -- (Xin et al. 2009:260 [ref. 30708]). •Synonym of Onychostoma fangi Kottelat 2000 -- (Kottelat 2013:129 [ref. 32989]). Current status: Synonym of Onychostoma fangi Kottelat 2000. Cyprinidae: Acrossocheilinae. Habitat: freshwater.

yeni, Varicorhinus (Onychostoma) Nguyen [V. H.] & Ngô [S. V.] in Nguyen & Ngô 2002:410, Fig. 201 [Freshwater fishes of Viet Nam. Volume I. Family Cyprinidae v. 1; ref. 28301] Ven Bai Province, Luc Yen districk, Phuc Loi, Ngoi Thuong, Vietnam. Holotype: VNCNTTS I: H.01.73.08.01. Paratypes: VNCNTTS I: H.01.73.08.02 - 03 (5). •Valid as Varicorhinus yeni Nguyen & Ngô 2002. •Probably should be regarded as a synonym of Onychostoma gerlachi (Peters 1881) -- (Xin et al. 2009:260 [ref. 30708]). •Questionably the same as Onychostoma fangi Kottelat 2000 -- (Kottelat 2013:129 [ref. 32989]). Current status: Synonym of Onychostoma fangi Kottelat 2000. Cyprinidae: Acrossocheilinae. Distribution: Yen Bai Province, Vietnam (if valid). Habitat: freshwater.