tupinamba, Phalloceros Lucinda [P. H. F.] 2008:125, Figs. 13-14 [Neotropical Ichthyology v. 6 (no. 2); ref. 29669] Rio Macacu, about 1.5 kilometers southeast from Macacu, near road RJ 116, Cachoeiras de Macacu, Rio de Janeiro, Brazil, 22°29'09"S, 42°39'34"W. Holotype: MCP 30408. Paratypes: MCP 20585 (26, 2 c&s). Species epithet is a noun in apposition. •Valid as Phalloceros tupinamba Lucinda 2008 -- (Meyer 2015:190 [ref. 34698], Souto-Santos et al. 2019:182 [ref. 36560], Huber 2019:90 [ref. 36941]). •Synonym of Phalloceros leptokeras Lucinda 2008 -- (Souto-Santos et al. 2022:[11] [ref. 39460]). Current status: Synonym of Phalloceros leptokeras Lucinda 2008. Poeciliidae: Poeciliinae. Habitat: freshwater.