Bathygobius ramosus Ginsburg, 1947 .

Panamic Frillfin; Mapo de Pozo, Mapo Panámico.

Distribution: Global: Eastern Pacific Ocean; from Bahía Magdalena and the Gulf of California, Mexico, to northern Peru, as well as Cocos and the Revillagigedos Islands; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: IC and Tr (Pacific), 0– 10 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1994; detailed description, including illustrations, information on distribution, with a map, and ecology).