acutiventralis, Alfaro Meek [S. E.] 1912:72 [Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 7); ref. 2960] Guapilis [Límon], Costa Rica. Holotype: FMNH 7679. Paratypes: FMNH 7872 (30), 14377 (1); UMMZ 162476 (6). Type catalog: Ibarra & Stewart 1987:7 [ref. 12367]. •Synonym of Alfaro cultratus (Regan 1908) -- (Rosen & Bailey 1963:43 [ref. 7067], Lucinda in Reis et al. 2003:555 [ref. 27061], Angulo et al. 2013:996 [ref. 33194], Meyer 2015:13 [ref. 34698], Huber 2019:47 [ref. 36941]). Current status: Synonym of Alfaro cultratus (Regan 1908). Poeciliidae: Poeciliinae. Habitat: freshwater.