Astyanax orstedii (Lütken, 1875) .

Costa Rican Tetra; Sardina, Sardina de Río, Sardinilla, Sabalete, Sábalo, Sardina Común, Plateada, Machaca, Coliroja, Picaculo, Golosa, Tetra, Mojarra, Sardina Costarricense.

Distribution: Global: Middle America; from southern Nicaragua to western Panama, Atlantic and Pacific drainages; Costa Rica: SJ, SC, Sa, To, Pa (Atlantic), Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 0–1000 m.a.s.l., Pri, Pot.

Occurrence and conservation status: Nat, LC.

References: Bussing (1966: 236, as Astyanax albeolus Eigenmann 1908 and Astyanax regani Meek 1909 —synonyms; listed, information on distribution), Bussing (1987: 69, as Astyanax fasciatus (Cuvier 1819) —synonym; 1998: 79, as Astyanax aeneus, in part—missidentification; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 991, as A. aeneus, in part—missidentification; listed, including taxonomic information and distributional data), Schmitter-Soto (2017: 1398; redescription, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2018: 1867; identification key and information on distribution).