Metzia Jordan [D. S.] & Thompson [W. F.] 1914:227 Fem. Acheilognathus mesembrinum Jordan & Evermann 1902. Type by original designation (also monotypic). Authorship is correctly Jordan & Thompson 1914:227. •Treated as a synonym of Rasborinus Oshima 1920 -- (Bănărescu 1997:23 [ref. 23274]). •Valid as Metzia Jordan & Thompson 1914 -- (Kottelat 2001:30 [ref. 25482] although implying that the genus dates to Jordan & Everman 1902, Chen & Fang 2002:74 [ref. 28835] wrongly with authorship as Jordan & Richardson 1902, Gan et al. 2009:55 [ref. 30038], Ho & Shao 2011:25 [ref. 31432], Shibukawa et al. 2012:264 [ref. 32338], Tang et al. 2013:19 [ref. 32559] in Oxygastrinae, Kottelat 2013:123 [ref. 32989], Tang et al. 2013:101 [ref. 33447] in Oxygastrinae, Luo et al. 2015:226 [ref. 33822], Zhang et al. 2016:61 [ref. 34477]). Current status: Valid as Metzia Jordan & Thompson 1914. Xenocyprididae.