procerus, Hyphessobrycon Mahnert [V.] & Géry [J.] 1987:311, Figs. 3-4 [Bonner Zoologische Beiträge v. 38 (no. 4); ref. 9115] Río Guyrau-gua at Ltr. Juan meters. Frutos, Departo. Caaguazu, Paraguay. Holotype: MHNG 2385.68. Paratypes: MHNG 2385.69 (orig. 28, 2 c&s); MNHN 1988-0468 (2); MZUSP 45714 [ex MHNG 2385.69] (2); USNM 290841 [ex MNHG 2385.69] (3); ZFMK 155`8-19 (2). Type catalog: Vari & Howe 1991:27 [ref. 19022], Oyakawa 1996:469 [ref. 23140], Weber 1998:7 [ref. 32707], Herder et al. 2010:117 [ref. 31087]. •Valid as Hyphessobrycon procerus Mahnert & Géry 1987 -- (Lima & Malabarba in Reis et al. 2003:139 [ref. 27061], Carvalho & Langeani 2013:526 [ref. 32913], Dagosta et al. 2014:366 [ref. 33382], Koerber et al. 2017:41 [ref. 35267]). Current status: Valid as Hyphessobrycon procerus Mahnert & Géry 1987. Acestrorhamphidae: Hyphessobryconinae. Distribution: Guyrau-gua River basin, Paraguay. Habitat: freshwater.