nicaraguensis, Gambusia Günther [A.] 1866:336 [Catalogue of the fishes in the British Museum v. 6; ref. 1983] Lake Nicaragua, Nicaragua. Syntypes: BMNH 1952.12.31.1-5 (5), USNM 151461 (1), ZMB 6069 (1). Type catalog: Paepke & Seegers 1986:173 [ref. 19981], Parenti et al. 1999:8 [ref. 24072], Smith 2018:70 [ref. 36061]. •Valid as Gambusia nicaraguensis Günther 1866 -- (Rosen & Bailey 1963:94 [ref. 7067], Fink 1971:53 [ref. 7671], Greenfield et al. 1982:131 [ref. 21395], Villa 1982:130 [ref. 36708], Bussing 1987:138 [ref. 22927], Rauchenberger 1989:3 [ref. 15687], Greenfield & Thomerson 1997:119 [ref. 22947], Bussing 1998:209 [ref. 24179], Parenti et al. 1999:8 [ref. 24072], Ghedotti & Wiley 2003:1157 [ref. 27019], Lucinda in Reis et al. 2003:560 [ref. 27061], Smith et al. 2003:16 [ref. 27621], Lucinda & Reis 2005:41 [ref. 29205], Pérez León & Schmitter Soto 2007:167 [ref. 32537], Matamoros et al. 2009:13 [ref. 31241], Angulo et al. 2013:996 [ref. 33194], Meyer 2015:87 [ref. 34698], Huber 2019:69 [ref. 36941], Angulo et al. 2023:60 [ref. 40676], Barrientos et al. 2023:274 [ref. 41235]). Current status: Valid as Gambusia nicaraguensis Günther 1866. Poeciliidae: Poeciliinae. Distribution: Central America: Atlantic slope of Guatemala to Panama (Belize, Guatemala, Honduras, Nicaragua, Costa Rica and Panama). Habitat: freshwater, brackish.