butleri, Poecilia Jordan [D. S.] 1889:330 [Proceedings of the United States National Museum v. 11 (no. 719); ref. 10479] Río Presidio, near Mazatlán, Sinaloa, Mexico. Syntypes: USNM 37158 (orig. 6, now 4). Type catalog: Parenti et al. 1999:14 [ref. 24072]. •Synonym of Poecilia sphenops Valenciennes 1846 -- (Rosen & Bailey 1963:50 [ref. 7067]). •Valid as Poecilia butleri Jordan 1889 -- (Espinosa Pérez et al. 1993:48 [ref. 22290], Rodriguez 1997:673 [ref. 23266], Parenti et al. 1999:14 [ref. 24072], Meyer & Radda 2000:75 [ref. 25029], Meyer et al. 2002:50 [ref. 26721], Poeser 2003:164 [ref. 26783], Lucinda in Reis et al. 2003:567 [ref. 27061], Nelson et al. 2004:104 [ref. 27807], Lucinda & Reis 2005:45 [ref. 29205], Miller 2006:232 [ref. 28615], Scharpf 2007:19 [ref. 30398], Poeser 2011:420 [ref. 31550], McMahan et al. 2013:447 [ref. 32422], Page et al. 2013:109 [ref. 32708], Palacios et al. 2013:13 [ref. 32935], Meyer 2015:211 [ref. 34698], Ho et al. 2016:Fig. 1 [ref. 34400] in subgenus Mollienesia, Palacios et al. 2016:232 [ref. 34629] in subgenus Mollienesia, Huber 2019:96 [ref. 36941]). Current status: Valid as Poecilia butleri Jordan 1889. Poeciliidae: Poeciliinae. Distribution: Pacific slope of Mexico, El Salvador, Guatemala, Honduras and Panama. Habitat: freshwater, brackish.