atracaudata, Deuterodon Meek [S. E.] & Hildebrand [S. F.] 1912:68 [Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 6); ref. 10934] Río Frijoles, Canal Zone, Panama. Holotype (unique): FMNH 7573. Non-types: FMNH (497, 22 localities). Type catalog: Ibarra & Stewart 1987:31 [ref. 12367]. Specific name is an adjective and must agree in gender. •Valid as Gephyrocharax atracaudata (Meek & Hildebrand 1912) -- (Weitzman in Reis et al. 2003:224 [ref. 27061], Vanegas-Ríos & Phillip 2013:1332 [ref. 34415], Thomaz et al. 2015: Add. 5 [ref. 33893]). •Valid as Gephyrocharax atracaudatus (Meek & Hildebrand 1912) -- (Malabarba & Weitzman 2000:280 [ref. 24413] as atricaudatus, Vanegas-Ríos 2016:9 [ref. 34359], Vanegas-Ríos 2017:6 [ref. 35531], Ferreira et al. 2018:170 [ref. 35911] as atracaudata). Current status: Valid as Gephyrocharax atracaudatus (Meek & Hildebrand 1912). Stevardiidae: Stevardiinae. Distribution: Panama. Habitat: freshwater.