simonsi, Galeichthys Starks [E. C.] 1906:764, Figs. 1-2 [Proceedings of the United States National Museum v. 30 (no. 1468); ref. 10101] Callao, Peru. Holotype (unique): USNM 53466. Type catalog: Ferraris & Vari 1992:8 [ref. 19771]. •Synonym of Arius seemanni Günther 1864 -- (Kailola & Bussing in Fischer et al. 1995:874 [ref. 22829]). •Synonym of Hexanematichthys seemanni (Günther 1864) -- (Marceniuk & Ferraris in Reis et al. 2003:452 [ref. 27061]). •Synonym of Ariopsis seemanni (Günther 1864) -- (Kailola 2004:126 [ref. 28108], Ferraris 2007:33 [ref. 29155]). •Synonym of Sciades seemanni (Günther 1864) -- (Marceniuk & Menezes 2007:110 [ref. 29031]). •Valid as Ariopsis simonsi (Starks 1906) -- (Marceniuk et al. 2017:35 [ref. 35431], Marceniuk et al. 2023:19 [ref. 40422]). Current status: Valid as Ariopsis simonsi (Starks 1906). Ariidae: Ariinae. Distribution: Eastern Pacific: Colombia to Peru. Habitat: freshwater, brackish, marine.