couchiana, Limia Girard [C. F.] 1859:116 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 11; ref. 27410] Río San Juan at Cadereita and Monterey, Nuevo León, Mexico. Possible syntypes USNM 3507 (2, from Cadereita) not located. Poecilia couchii in an unjustified emendation. •Valid as Xiphophorus couchianus (Girard 1859) -- (Rosen & Bailey 1963:63 [ref. 7067], Rosen 1979:353 [ref. 22796], Espinosa Pérez et al. 1993:55 [ref. 22290], Rodriguez 1997:674 [ref. 23266] as cochianus, Meyer & Schartl 2002:59 [ref. 26066], Lucinda in Reis et al. 2003:573 [ref. 27061], Kallman et al. 2004:9 [ref. 27790], Nelson et al. 2004:105 [ref. 27807], Lucinda & Reis 2005:44 [ref. 29205], Miller 2006:257 [ref. 28615], Scharpf 2007:23 [ref. 30398], Page et al. 2013:111 [ref. 32708], Meyer 2015:378 [ref. 34698], Huber 2019:144 [ref. 36941], Page et al. 2023:148 [ref. 40505]). Current status: Valid as Xiphophorus couchianus (Girard 1859). Poeciliidae: Poeciliinae. Distribution: Southern North America: San Juan River basin, Nuevo Léon, Atlantic slope (Mexico). Habitat: freshwater.