echeagarayi, Dicerophallus Álvarez [J.] 1952:95, Figs. 1-3 [Ciencia (Mexico City) v. 12 (nos 3-4); ref. 102] Río Michol, near Palenque, Chiapas, Mexico. Holotype: ENCB-IPN P279. Paratypes: (13) UMMZ 164098 (2). •Valid as Gambusia echeagarayi (Álvarez 1952) -- (Rosen & Bailey 1963:107 [ref. 7067], Rauchenberger 1989:3 [ref. 15687], Espinosa Pérez et al. 1993:45 [ref. 22290], Lucinda in Reis et al. 2003:559 [ref. 27061], Lucinda & Reis 2005:41 [ref. 29205]). •Valid as Heterophallus echeagarayi (Álvarez 1952) -- (Nelson et al. 2004:104 [ref. 27807], Miller 2006:230 [ref. 28615], Scharpf 2007:17 [ref. 30398], Page et al. 2013:109 [ref. 32708], Meyer 2015:129 [ref. 34698], Álvarez-Pliego et al. 2016:178 [ref. 34825], Huber 2019:79 [ref. 36941], Page et al. 2023:146 [ref. 40505]). Current status: Valid as Heterophallus echeagarayi (Álvarez 1952). Poeciliidae: Poeciliinae. Distribution: Southern North America: Chiapas to Veracruz, Atlantic slope (Mexico). Habitat: freshwater.