Anguilla rostrata (Lesueur, 1817).
American Eel; Anguila, Anguila de Mar, Anguila Verdadera, Anguila Americana.
Distribution: Global: Western Atlantic Ocean; from southern Greenland to northwestern Venezuela; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: LN, RF, SJ, SC, Sa, To, Pa, Ma and Si (Atlantic), 0– 20 m.a.s.l., Per, Dia (Cat).
Occurrence and conservation status: Nat, EN.
References: Bussing (1966: 236; brief description and information on distribution), Bussing (1998: 64; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 989; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 2770; detailed description, including illustrations, information on distribution, with a map, and ecology).