curvioperculata, Sternarchella Godoy [M. P. de] 1968:352, Figs. 3-5 [Revista Brasileira de Biologia v. 28 (no. 4); ref. 7886] Affluent of the Rio Mogi Guassu, São Paulo State, Brazil. Holotype (unique): EEBP 336. Type catalog: Ferraris et al. 2017:[10] [ref. 35236]. •Valid as Sternarchella curvioperculata Godoy 1968 -- (Mago-Leccia 1994:34 [ref. 21320], Albert 2001:111 [ref. 25614], Albert in Reis et al. 2003:500 [ref. 27061], Triques 2011:304 [ref. 31671], Lundberg et al. 2013:158 [ref. 32552], Ferraris et al. 2017:[10] [ref. 35236]). •Possibly a species of Apteronotus -- (Evans et al. 2017:2 [ref. 35357]). Apteronotidae: Apteronotinae. Distribution: Rio Paraná basin, Brazil. Habitat: freshwater.