viviparus, Cyprinus Bustamante [M. y S.] 1837:116 [El Mosaico Mexicano ó Collección de Amenidades Curiosas é Instructivas v. 2; ref. 22292] Mexico [probably Mexico city area]. No types known. •Valid as Girardinichthys viviparus (Bustamante 1837) -- (Espinosa Pérez et al. 1993:41 [ref. 22290], Nelson et al. 2004:107 [ref. 27807], Miller 2006:280 [ref. 28615], Scharpf 2007:28 [ref. 30398], Huber 2019:27 [ref. 36941], Lyons et al. 2019:136 [ref. 37104]). Current status: Valid as Girardinichthys viviparus (Bustamante 1837). Goodeidae: Goodeinae. Distribution: North America: endorheic Valley of Mexico near Mexico City (central Mexico). Habitat: freshwater.