Gobiomorus maculatus (Günther, 1859) .

Bigscale Sleeper, Pacific Sleeper; Guavina del Pacífico, Bocón, Guavina Bocóna, Dormilón de Escamas Grandes, Dormilón Manchado.

Distribution: Global: Eastern Pacific Ocean; from Baja California and the mouth of the Gulf of California, Mexico, to northern Peru, as well as the Galapagos and Cocos Islands; entering estuaries and ascending river courses; Costa Rica: Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 0– 145 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 250; 1998: 422; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1979; detailed description, including illustrations, information on distribution, with a map, and ecology).