hautus, Rasborinus Nguyen [T. T.] 1991:14 [v. 3; ref. 25484] Thanh Chuong, Nghe Tinh Province, Vietnam. Holotype: VUP D.v.75. Type from Kottelat (2013). •Status uncertain, as Metzia hautus (Nguyen 1991) -- (Kottelat 2001:29 [ref. 25482], Kottelat 2013:123 [ref. 32989]). •Valid as Metzia hautus (Nguyen 1991) -- (Gan et al. 2009:55, 60 [ref. 30038], Shibukawa et al. 2012:264 [ref. 32338], Luo et al. 2015:226 [ref. 33822]). Current status: Valid as Metzia hautus (Nguyen 1991). Xenocyprididae. Distribution: Vietnam. Habitat: freshwater.