guarani, Hyphessobrycon Mahnert [V.] & Géry [J.] 1987:307, Figs. 1-2 [Bonner Zoologische Beiträge v. 38 (no. 4); ref. 9115] Upper Río Paraná at Puerto Bertoni, Departamento Alto Paraná, 25°38'S, 54°40'W, Paraguay. Holotype: MHNG 2366.99. Paratypes: MHNG 2366.100 (orig. 77, 6 c&s), 2367.1 (34), 2367.2 (41), 2367.3 (4), 2367.4 (77); MNHN 1988-0467 (2); MZUSP 38399 [ex MHNG 2366.100] (3); USNM 290840 [ex MHNG 2366.100] (3), ZFMK 15521-23 (3). Type catalog: Vari & Howe 1991:26 [ref. 19022], Oyakawa 1996:468 [ref. 23140], Weber 1998:7 [ref. 32707], Herder et al. 2010:116 [ref. 31087]. •Valid as Hyphessobrycon guarani Mahnert & Géry 1987 -- (Gómez & Chebez 1996:50 [ref. 23791], Almirón & Casciotta 1999:345 [ref. 24405], Lima & Malabarba in Reis et al. 2003:137 [ref. 27061], López et al. 2003:27 [ref. 27366], Menni 2004:77 [ref. 28131], Almirón et al. 2004:674 [ref. 27987], Almirón et al. 2006:895 [ref. 29163], Miquelarena & López 2010:5 [ref. 30749], Carvalho & Langeani 2013:526 [ref. 32913], Dagosta et al. 2014:373 [ref. 33382], Mirande & Koerber 2015:26 [ref. 35117]). •Valid as Diapoma guarani (Mahnert & Géry 1987) -- (Thomaz et al. 2015:Add. 5 [ref. 33893], Koerber et al. 2015:2 [ref. 35179], Bertaco et al. 2016:413 [ref. 34561], Koerber et al. 2017:3 [ref. 35083], Koerber et al. 2017:34 [ref. 35267], Koerber et al. 2017:3 [ref. 35632], Koerber et al. 2019:3 [ref. 36736], Mirande & Koerber 2020:2 [ref. 37594], Reis et al. 2020:460 [ref. 38364], Ito et al. 2022:20 [ref. 39124]). Current status: Valid as Diapoma guarani (Mahnert & Géry 1987). Characidae: Stevardiinae. Distribution: South America: upper Paraná River basin (Argentina and Paraguay). Habitat: freshwater.