auca, Hyphessobrycon Almirón [A. E.], Casciotta [J. R.], Bechara [J. A.] & Ruíz Díaz [F. J.] 2004:674, Figs. 1-7 [Revue Suisse de Zoologie v. 111 (no. 3); ref. 27987] Pond in San Juán Poriahú farm, Esteros del Iberá, Corrientes, Argentina, 27°41'53"S, 57°12'17"W. Holotype: MACN 8647. Paratypes: AI 129 (6, 1 c&s); MLP 10455 [ex Al 130] (5); MHNG 2644.023 (4). Type catalog: Nadalin & López 2015:5 [ref. 34112]. •Valid as Hyphessobrycon auca Almirón, Casciotta, Bechara & Ruíz Díaz 2004 -- (Miquelarena & López 2006:824 [ref. 29070], Almirón et al. 2006:895 [ref. 29163], Miquelarena & López 2010:5 [ref. 30749], Koerber 2011:3 [ref. 31122], Koerber 2014:5 [ref. 33621], Mirande & Koerber 2015:26 [ref. 35117]). Current status: Valid as Hyphessobrycon auca Almirón, Casciotta, Bechara & Ruíz Díaz 2004. Acestrorhamphidae: Hyphessobryconinae. Distribution: Esteros del Iberá wetlands, Argentina. Habitat: freshwater.