seemanni, Arius Günther [A.] 1864:147, Fig. [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Central America (Pacific). Holotype (unique): BMNH 1855.9.19.1107. •Valid as Hexanematichthys seemanni (Günther 1864) -- (Ovchynnyk 1967:34 [ref. 37559] as seemanii). •Valid as Arius seemanni Günther 1864 -- (Villa 1982:115 [ref. 36708] as seemani, Burgess 1989:169 [ref. 12860], Allen & Robertson 1994:68 [ref. 22193], Bussing & López S. 1994:60 [ref. 23101], Kailola & Bussing in Fischer et al. 1995:874 [ref. 22829], De La Cruz Agüero et al. 1997:58 [ref. 24545], Bussing 1998:139 [ref. 24179], Chirichigno F. & Vélez D. 1998:160 [ref. 24555], Castro-Aguirre et al. 1999:000 [ref. 24550] as seemani, Miller 2006:169 [ref. 28615]). •Valid as Sciades seemanni (Günther 1864) -- (Marceniuk & Menezes 2007:110 [ref. 29031], Matamoros et al. 2009:10 [ref. 31241], Marceniuk et al. 2012:668 [ref. 32225], Angulo et al. 2013:993 [ref. 33194], Jiménez-Prado et al. 2015:400 [ref. 34894], Romero-Berny et al. 2018:89 [ref. 35859]). •Valid as Ariopsis seemanni (Günther 1864) -- (Bussing 1987:100 [ref. 22927], Nelson et al. 2004:83 [ref. 27807], Kailola 2004:126 [ref. 28108], Ferraris 2007:33 [ref. 29155], Betancur-R. et al. 2007:348 [ref. 29268], McMahan et al. 2013:445 [ref. 32422], Page et al. 2013:82 [ref. 32708], Barriga Salazar 2014:115 [ref. 35745] as seemani, Marceniuk et al. 2017:31 [ref. 35431], González-Murcia et al. 2019:291 [ref. 36544], Angulo et al. 2023:28 [ref. 40676], Barrientos et al. 2023:272 [ref. 41235], Marceniuk et al. 2023:19 [ref. 40422], Siccha-Ramirez et al. 2023:133 [ref. 40816], Valenzuela et al. 2023:95 [ref. 40815]). Current status: Valid as Ariopsis seemanni (Günther 1864). Ariidae: Ariinae. Distribution: Eastern Pacific: El Salvador south to northern Peru. Habitat: freshwater, brackish, marine.