Gobiomorus polylepis Ginsburg, 1953 .

Finescale Sleeper; Guavina del Pacífico, Bocón, Guavina Bocóna, Dormilón de Escamas Finas, Dormilón Manchado.

Distribution: Global: Eastern Pacific Ocean; from central Mexico to southern Costa Rica; entering estuaries and ascending river courses; Costa Rica: Ni and Pi (Pacific), 2– 15 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, DD.

References: Bussing (1987: 251; 1998: 424; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data).