Species: Opisthonema libertate, Deepbody thread herring, Pacific thread herring

Opisthonema libertate (Günther, 1867)

Pacific thread herring,     Deepbody thread herring

Body moderately deep, its depth ~ 38% of SL; mouth opens at front, oblique, short, without a front notch between top jaws;  top jaw of 2 toothed bones; teeth small, conical; 63-110 lower gill rakers; rear of gill opening on body with 2 fleshy lobes; dorsal at about midpoint of body, last ray long and filamentous, reaching base of tail fin; anal fin with base shorter than head, origin well behind dorsal fin; pectoral long, passing origin of dorsal fin; 7 branched pelvic rays; belly with keel of scutes before and behind pelvics; scales relatively small (< 50 in lateral series), irregularly arranged.