regani, Gambusia Hubbs [C. L.] 1926:28 [Miscellaneous Publications, Museum of Zoology, University of Michigan No. 16; ref. 2233] Río Forlón, Forlón, Tamaulipas, Mexico. Holotype: FMNH 14033. Paratypes: FMNH 14034-45 (12). Type catalog: Ibarra & Stewart 1987:37 [ref. 12367]. •Valid as Gambusia regani Hubbs 1926 -- (Rosen & Bailey 1963:105 [ref. 7067], Rauchenberger 1989:3 [ref. 15687], Espinosa Pérez et al. 1993:46 [ref. 22290], Lucinda in Reis et al. 2003:560 [ref. 27061], Nelson et al. 2004:104 [ref. 27807], Lucinda & Reis 2005:41 [ref. 29205], Miller 2006:225 [ref. 28615], Scharpf 2007:18 [ref. 30398], Page et al. 2013:109 [ref. 32708], Meyer 2015:97 [ref. 34698], Raz-Guzmán et al. 2018:345 [ref. 36407], Huber 2019:71 [ref. 36941], Page et al. 2023:146 [ref. 40505], Fricke et al. 2024:451 [ref. 41622]). Current status: Valid as Gambusia regani Hubbs 1926. Poeciliidae: Poeciliinae. Distribution: Southern North America: Río Soto la Marina basin south to Ríos Pánuco and Tamesi (Río Boquillas) basins to the Río Nautla basin, Hidalgo, Puebla, San Luis Potosí, Tamaulipas and Veracruz (Mexico). Introduced in other parts of Mexico. Habitat: freshwater.