Atherinella sardina (Meek, 1907) .

Nicaraguan Silverside; Pejerrey Nicaraguense.

Distribution: Global: Middle America; from southern Nicaragua to northern Costa Rica, Atlantic drainages; Costa Rica: LN (Atlantic), 0–40 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, VU.

References: Bussing (1987: 161, as Melaniris sardina —synonym; 1998: 244; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 995; listed, including taxonomic information and distributional data).