Ariopsis guatemalensis (Günther 1864). Blue Sea Catfish, Widehead Sea Catfish; Cominata Azulada, Bagre Cuatete Vouchers: Not available. Distribution: Eastern Pacific Ocean; from southern Baja California, Mexico, to Costa Rica; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) ER, PN and Ni (Pacific); 0–11 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2010), population trend unknown. Literature: Villa (1982: 115; detailed description, including illustrations and an identification key, and information on distribution and ecology), Bussing (1998: 138; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology), Robertson & Allen (2015: 568; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 31; listed, including information on distribution).

Published as part of Angulo, Arturo, Betts, Joel T., González-Alemán, Néstor J., Castañeda, Edgar, Berghe, Eric Van Den, Elías, Diego J., Mcmahan, Caleb D. & Matamoros, Wilfredo A., 2023, Continental fishes of Nicaragua: diversity, distribution and conservation status; with an annotated and illustrated checklist of species and an identification guide to families, pp. 1-89 in Zootaxa 5376 (1) on page 28, DOI: 10.11646/zootaxa.5376.1.1, http://zenodo.org/record/10208788