Leptophilypnus fluviatilis Meek & Hildebrand, 1916 .

Atlantic Freshwater Sleeper; Dormilón de Agua Dulce.

Distribution: Global: Western Atlantic and Eastern Pacific (Canal zone in Panama) Oceans; from Honduras to Panama; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: To (Atlantic), 0– 6 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 & Van Tassell (2019: 4418; detailed description, including illustrations, information on distribution, with a map, and ecology).