amazonicus, Johnius Castelnau [F. L.] 1855:12, Pl. 4 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Amazon River. Syntypes: MNHN 0000-7504 (1), B-2772 [ex MNHN 0000-7504] (1). Type catalog: Bauchot & Desoutter 1987:11 [ref. 6382] with 7504 as holotype. •Synonym of Plagioscion squamosissimus (Heckel 1840) -- (Chao 1978:44 [ref. 6983], Casatti in Reis et al. 2003:601 [ref. 27061], Casatti 2005:42 [ref. 28401], Mirande & Koerber 2015:55 [ref. 35117], Parenti 2020:44 [ref. 37439]). Current status: Synonym of Plagioscion squamosissimus (Heckel 1840). Sciaenidae. Habitat: freshwater.