Ariopsis guatemalensis (Günther, 1864) .

Blue Sea Catfish, Widehead Sea Catfish; Cominata Azulada, Bagre Cuatete.

Distribution:Global: Eastern Pacific Ocean;from southern Baja California, Mexico, to Costa Rica; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Te (Pacific), 0– 11 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Bussing (1998: 138; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 993, as Sciades guatemalensis —synonym; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 568; detailed description, including illustrations, information on distribution, with a map, and ecology).