tenuis, Poecilia Meek [S. E.] 1907:147 [Field Columbian Museum, Zoölogical Series v. 7 (no. 5); ref. 15159] Tiribi, Costa Rica [probably near the mouth of Río Torres]. Holotype: FMNH 6028. Paratypes: FMNH 6029 (2), 6226 (2). Type catalog: Ibarra & Stewart 1987:68 [ref. 12367]. •Synonym of Poecilia sphenops Valenciennes 1846 -- (Rosen & Bailey 1963:51 [ref. 7067], Lucinda in Reis et al. 2003:569 [ref. 27061]). •Synonym of Poecilia gillii (Kner 1863) -- (Poeser 2003:49 [ref. 26769], Poeser 2003:163 [ref. 26783], Poeser 2003:360 [ref. 27075], Huber 2019:120 [ref. 36941]). Current status: Synonym of Poecilia gillii (Kner 1863). Poeciliidae: Poeciliinae. Habitat: freshwater, brackish.