australis, Gambusia yucatana Greenfield [D. W.] 1985:375 [Copeia 1985 (no. 2); ref. 8971] Saint George's Cay, Barrier Reef, Belize. Holotype: FMNH 94901. Paratypes: FMNH 93919 (20), 94896 (9), 94898 (11), 94900 (18). Other material: FMNH (9 lots, 359 specimens), UMMZ (7 lots, 95 specimens). Type catalog: Ibarra & Stewart 1987:38 [ref. 12367]. •Synonym of Gambusia yucatana Regan 1914, but a valid subspecies as described -- (Greenfield & Thomerson 1997:121 [ref. 22947], Lucinda in Reis et al. 2003:561 [ref. 27061], Scharpf 2007:17 [ref. 30398], Meyer 2015:108 [ref. 34698]). •Synonym of Gambusia yucatana Regan 1914 -- (Pérez-León & Schmitter-Soto 2007: 171 [ref. 32537], Huber 2019:60 [ref. 36941]). Current status: Synonym of Gambusia yucatana Regan 1914. Poeciliidae: Poeciliinae. Habitat: freshwater.