rivularis, Tetragonopterus Lütken [C. F.] 1875:132 [6] [Oversigt over det Kongelige Danske Videnskabernes Selskabs Forhandlinger og dets Medlemmers Arbeider (Kjøbenhavn) 1874 (no. 3); ref. 2856] Rio das Velhas, Minas Gerais State, Brazil. Syntypes: MNHN 0000-9582 [ex ZMUC] (4), NMW 57707 (5), SMNS 2046 (3), ZMB 9199 (4), ZMUC (49). Type catalog: Bertin 1948:21 [ref. 19577], Nielsen 1974:46 [ref. 9588], Fricke 1995:9 [ref. 28100], Fricke 2005:26 [ref. 29864] On p. 6 of separate. Also described in Lütken 1875:215 (and p. XIII of summary), Pl. 5 (figs. 13-14) [ref. 19674]. •Synonym of Astyanax scabripinnis (Jenyns 1842), but a valid subspecies -- (Britski 2001:21 [ref. 26046], Triques et al. 2003:149 [ref. 27248]). •Valid as Astyanax rivularis (Lütken 1875) -- (Casatti & Castro 1998:232 [ref. 23663], Buckup in Reis et al. 2003:112 [ref. 27061], Bertaco & Lucena 2006:58 [ref. 28628], Vari & Castro 2007:158 [ref. 29039], Abilhoa & Duboc 2007:45 [ref. 29285], Zanata & Camelier 2009:175 [ref. 30252], Tagliacollo et al. 2011:41 [ref. 31138], Oliveira et al. 2013:292 [ref. 32756], Ingenito & Duboc 2014:282 [ref. 33374], Marinho et al. 2015:576 [ref. 33708], Zanata et al. 2017:508 [ref. 35145], da Graça et al. 2017:13 [ref. 35556], Oliveira et al. 2017:180 [ref. 35587], Zanata et al. 2018:486 [ref. 35984], Silva et al. 2020:5 [ref. 37809]). •Valid as Psalidodon rivularis (Lütken 1875) -- (Terán et al. 2020:11 [ref. 37440], Alves et al. 2020:811 [ref. 38167], Quintela et al. 2023:6 [ref. 40727]). Current status: Valid as Psalidodon rivularis (Lütken 1875). Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: São Francisco River basin (Brazil). Habitat: freshwater.