IUCN threat status:

Least Concern (LC)

Comprehensive Description

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Description

  Common names: thread-herring (English), sardina (Espanol), machuelo-hebra (Espanol), sardina-gallera (Espanol)
 
Opisthonema bulleri (Regan, 1904)

Slender thread herring,     Pacific thread-herring

Body relatively slender, its depth ~ 31% of SL; mouth opens at front, oblique, short, without a notch at top front; top jaw with 2 toothed bones; teeth small, conical;  25-36 lower gill rakers; rear of gill opening on body with 2 fleshy lobes; dorsal at about midpoint of body, last ray long and filamentous, but not reaching tail fin; anal fin with base shorter than head, origin well behind dorsal fin; pectoral short, not reaching under dorsal fin; 7 branched pelvic rays; belly with keel of scutes before and behind pelvics; scales relatively small (< 50 in lateral series), irregularly arranged.

Back grey-green; sides silvery white; a black spot immediately behind upper edge of operculum followed by a yellow stripe along upper flank; 1-2 dark spots on top of back under dorsal fin; inner halves of dorsal and tail fins pale yellow, outer halves clear, tail tips may be dusky.

Size: 24 cm.

Habitat: coastal pelagic.

Depth: 0-10 m?

The eastern Gulf of California to Peru.
   

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© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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