Pseudoxiphophorus Bleeker [P.] 1860:440 Masc. Xiphophorus bimaculatus Heckel 1848. Appeared in key, without included species; also in other Bleeker papers in 1859-1860; earliest not established. Type by subsequent monotypy (possibly dating to Bleeker 1864:140 [ref. 4859]). •Synonym of Heterandria Agassiz 1853, but a valid subgenus Pseudoxiphophorus -- (Miller 1974 [ref. 7119], Rosen 1979:315 [ref. 22796], Parenti & Rauchenberger 1989:9 [ref. 13538]). •Synonym of Heterandria Agassiz 1853 -- (Rosen & Bailey 1963:128 [ref. 7067], Lucinda in Reis et al. 2003:562 [ref. 27061], Lucinda & Reis 2005:40 [ref. 29205]). •Valid as Pseudoxiphophorus Bleeker 1860 -- (Radda 1985:126 [ref. 31261], Ghedotti 2000:11 [ref. 27228], Morales-Cazan & Albert 2012:20 [ref. 31911], Meyer 2015:333 [ref. 34698], Huber 2019:136 [ref. 36941]). Current status: Valid as Pseudoxiphophorus Bleeker 1860. Poeciliidae: Poeciliinae.