Opisthonema libertate (Günther 1867) .

Deepbody Thread Herring, Pacific Thread Herring; Sardina-Gallera Común, Sardina Crinuda, Arenque de Hebra Común, Machuelo Hebra del Pacífico, Sardina-Gallera Pecosa, Machuelo Hebra Pinchagua.

Distribution: Global: Eastern Pacific Ocean; from southern California, USA, to central Chile; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Pi (Pacific), 0– 9 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, LC.

References: Angulo et al. (2015: 1; new country record, including information on distribution, an identification key and illustrations) and Robertson & Allen (2015: 541; detailed description, including illustrations, information on distribution, with a map, and ecology).