Dactyloscopus amnis Miller & Briggs, 1962 .

Estuarine Sandstargazer, Riverine Stargazer; Miraestrellas de Arena Estuarina, Miraestrellas Ribereña.

Distribution: Global: Eastern Pacific Ocean; from southern Mexico to eastern Panama; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Ba (Pacific), 0– 10 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1376; detailed description, including illustrations, information on distribution, with a map, and ecology).