New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist Author Angulo, Arturo 0000-0002-4587-1446 arturo.angulosibaja@ucr.ac.cr text Zootaxa 2021 2021-12-23 5083 1 1 72 journal article 2794 10.11646/zootaxa.5083.1.1 8e076bdf-97f5-4fc4-8c63-6ecc98c3dc05 1175-5326 5800630 14FA7505-F1F8-47F3-878C-AC349B50671D Eucinostomus gracilis (Gill, 1862) . Graceful Mojarra, Slender Mojarra; Mojarra Plateada, Sargo, Comearena, Palmito. Distribution: Global: Eastern Pacific Ocean; from Anaheim Bay, southern California, USA, to Peru, including the Galapagos Islands; entering estuaries and littoral lagoons and ascending river courses; Costa Rica : Tr (Pacific), 0– 5 m .a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237, as Eucinostomus californiensis —synonym; listed, information on distribution) and Robertson & Allen (2015: 1334 ; detailed description, including illustrations, information on distribution, with a map, and ecology).