Ariopsis assimilis (Günther 1864) . Mayan Sea Catfish; Bagre Maya

Vouchers: Not available. Distribution: Western Atlantic Ocean; from Quintana Roo, Mexico, to Costa Rica; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) WK, GM, KP, Es, BF, IM and To (Atlantic); 0–10 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2019), population trend decreasing. Literature: Villa (1982: 114; detailed description, including illustrations and an identification key, and information on distribution and ecology), van den Berghe (2015: 40, as Arius seemanni —misidentification; listed, including an illustration and information on distribution and ecology), Robertson & Van Tassell (2019: 2976; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 31; listed, including information on distribution).