stenopterus, Asiphonichthys Cope [E. D.] 1894:67 [American Naturalist v. 28 (no. 325); ref. 966] Upper Rio Jacuhy, Rio Grande do Sul State, Brazil. Holotype (unique): ANSP 21559. Type catalog: Böhlke 1984:54 [ref. 13621]. •Valid as Charax stenopterus (Cope 1894) -- (Lucena 1987:26 [ref. 17724], Malabarba 1989:132 [ref. 14217], Lucena 1989:104 [ref. 12852], Lucena & Menezes in Reis et al. 2003:201 [ref. 27061], López et al. 2003:17 [ref. 27366], Casciotta et al. 2003:83 [ref. 28130], Menni 2004:74 [ref. 28131], Mirande 2010:494 [ref. 31006], Menezes & Lucena 2014:222 [ref. 33369], Litz & Koerber 2014:11 [ref. 33622], Sarmiento et al. 2014:184 [ref. 35004], Mirande & Koerber 2015:18 [ref. 35117], Bertaco et al. 2016:413 [ref. 34561], Petry et al. 2016:301 [ref. 34966], Nión et al. 2016:28 [ref. 35565], Koerber et al. 2017:27 [ref. 35267], Reis et al. 2020:457 [ref. 38364], Loureiro et al. 2023:54 [ref. 40506]). Current status: Valid as Charax stenopterus (Cope 1894). Characidae: Characinae. Distribution: South America: Paraguay and Uruguay River basins and eastern rivers of Rio do Sul State and Uruguay (Argentina, Brazil, Bolivia, Paraguay and Uruguay). Habitat: freshwater.