eurystoma, Gambusia Miller [R. R.] 1975:19, Fig. 5 [Occasional Papers of the Museum of Zoology University of Michigan No. 672; ref. 9272] Arroyo del Azufre, Baños de Azufre, 10 kilometers west of of Teapa, Tabasco, Mexico, 17°34'N, 93°01'W, elevation 150 meters. Holotype: UMMZ 197600. Paratypes: UMMZ 197601 (1, allotype), 184717 (290, now 260, 3 c&s); USNM 211263 [ex UMMZ 184717] (30). Type catalog: Parenti et al. 1999:6 [ref. 24072]. •Valid as Gambusia eurystoma Miller 1975 -- (Greenfield 1983:457 [ref. 8337], Rauchenberger 1989:3 [ref. 15687], Espinosa Pérez et al. 1993:45 [ref. 22290], Parenti et al. 1999:6 [ref. 24072], Lucinda in Reis et al. 2003:559 [ref. 27061], Nelson et al. 2004:103 [ref. 27807], Lucinda & Reis 2005:41 [ref. 29205], Miller 2006:222 [ref. 28615], Scharpf 2007:17 [ref. 30398], Meyer et al. 2010:13 [ref. 30817], Page et al. 2013:108 [ref. 32708], Meyer 2015:66 [ref. 34698], Huber 2019:62 [ref. 36941], Page et al. 2023:145 [ref. 40505]). Current status: Valid as Gambusia eurystoma Miller 1975. Poeciliidae: Poeciliinae. Distribution: Southern North America: Baños de Azufre, Tabasco, Atlantic slope (Mexico). Habitat: freshwater.