bifurcus, Acanthophacelus Eigenmann [C. H.] 1909:52 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Christianburg, Guyana. Holotype: FMNH 53539 [ex CM 1088]. Paratypes: (74, CM and IU) BMNH 1911.10.31.502-503 (2), 1911.10.31.504 (1); CAS 22557 [ex IU 11763-64] (7), 22558 [ex IU 11765-66] (6); FMNH 7526 (2), 52719-20 (5, 5), 52721 (2), 53539-40 (1, 3), 69530 (14), 72623 (5); MCZ 30119 (2); CAS-SU 21930 (2); USNM 66115 (3); ZMA 109208 (1); ZMB 18066 (2). Type catalog: Henn 1928:86 [ref. 12305], Böhlke 1953:55 [ref. 12291], Nijssen et al. 1982:69 [ref. 19236], Paepke & Seegers 1986:172 [ref. 19981], Ibarra & Stewart 1987:4 [ref. 12367] as 36 paratypes from 2 localities, Parenti et al. 1999:3 [ref. 24072]. •Synonym of Poecilia parae Eigenmann 1894 -- (Rosen & Bailey 1963:56 [ref. 7067], Parenti et al. 1999:3 [ref. 24072], Poeser 2003:146 [ref. 26783]). •Valid as Micropoecilia bifurca (Eigenmann 1909) -- (Keith et al. 2000:64 [ref. 24547], Lucinda in Reis et al. 2003:564 [ref. 27061], Lucinda & Reis 2005:46 [ref. 29205]). •Valid as Poecilia bifurca (Eigenmann 1909) -- (Bragança & Costa 2011:370 [ref. 31195], Bragança et al. 2012:337 [ref. 31747], Meyer 2015:258 [ref. 34698], Huber 2019:95 [ref. 36941], Taphorn et al. 2022:35 [ref. 41297] in subgenus Micropoecilia). Current status: Valid as Poecilia bifurca (Eigenmann 1909). Poeciliidae: Poeciliinae. Distribution: South America: Orinoco Delta and coastal rivers (Venezuela to Guyana and French Guiana). Habitat: freshwater, brackish.