Rhencus macracanthus (Günther 1864) . Longspine Grunt; Corocoro Coche, Ronco Espina Larga, Roncacho Gordo

Vouchers: Not available. Distribution: Eastern Pacific Ocean; from southern Baja California, Mexico, to Ecuador; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) PN and Ni (Pacific); 0–8 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; DD (2010), population trend unknown. Literature: Villa (1982:182, as Pomadasys macracanthus —synonym; detailed description, including illustrations and an identification key, and information on distribution and ecology), Robertson & Allen (2015: 1384; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 66; listed, including information on distribution).