Rhencus macracanthus (Günther, 1864) .

Longspine Grunt; Corocoro Coche, Ronco Espina Larga, Roncacho Gordo.

Distribution: Global: Eastern Pacific Ocean; from southern Baja California, Mexico, to Ecuador; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Ba (Pacific), 0– 32 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Angulo et al. (2013: 1002, as Pomadasys macracanthus —synonym; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1384; detailed description, including illustrations, information on distribution, with a map, and ecology).