Rhonciscus bayanus (Jordan & Evermann 1898). Purplemouth Grunt, Pacific Freshwater Grunt; Roncador, Corocoro Boquimorado, Ronco Liso, Roncador de Río del Pacífico

Vouchers: (other collections) UF 234049 (1), 234050 (1) and 234051 (1). Distribution: Eastern Pacific Ocean; from southern Baja California, Mexico, to northern Peru; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) PN and Ni (Pacific); 0–21 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2020), population trend unknown. Literature: Villa (1982: 181, as Pomadasys bayanus —synonym; detailed description, including illustrations and an identification key, and information on distribution and ecology), Bussing (1998: 289, as P. bayanus —synonym; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology), Robertson & Allen (2015: 1381, as P. bayanus —synonym; detailed description, including illustrations, and information on distribution, with a map, and ecology) and Angulo (2021: 66; listed, including information on distribution).