longispinis, Gambusia Minckley [W. L.] 1962:391, Figs. 1-3 [Copeia 1962 (no. 2); ref. 6259] Small marsh adjacent to La Angostura Canal, about 4 miles west of Cuatro Ciénegas, Coahuila, Mexico. Holotype: UMMZ 179620. Paratypes: UMMZ 130382 (50, 8 c&s), 130393 (1), 130394 (19), 179619 (3), 179621 (15 or 17), 179622 (6). •Valid as Gambusia longispinis Minckley 1962 -- (Rosen & Bailey 1963:103 [ref. 7067], Rauchenberger 1989:3 [ref. 15687], Espinosa Pérez et al. 1993:46 [ref. 22290], Lucinda in Reis et al. 2003:559 [ref. 27061], Nelson et al. 2004:103 [ref. 27807], Lucinda & Reis 2005:41 [ref. 29205], Scharpf 2007:18 [ref. 30398], Meyer et al. 2010:13 [ref. 30817], Page et al. 2013:109 [ref. 32708], Meyer 2015:80 [ref. 34698], Huber 2019:66 [ref. 36941], Page et al. 2023:146 [ref. 40505]). Current status: Valid as Gambusia longispinis Minckley 1962. Poeciliidae: Poeciliinae. Distribution: Southern North America: Cuatro Ciénegas basin, Coahuila (northern Mexico). Habitat: freshwater.