Bigeye question -redux

From: John DeBeer (john.debeer@cox.net)
Date: Sat Jan 20 2007 - 13:55:25 PST

  • Next message: Klaus Schallie: "RE: Hey! Tom, my question."

    What size and in what state of freshness?

    Raw or frozen, round with liver or without liver?

    Are the fish right next to each other?

     

    http://www.fao.org/fi/atlas/tunabill/english/PICTURES/TONNIBIG/BIGEYE.HTM

     

    http://www.fao.org/fi/atlas/tunabill/english/PICTURES/TONNIBIG/YELLFIN.HTM

     

    http://www.partyboatnj.com/bigeye-tuna.shtml

    Big Eye Tuna

    Bigeye Tuna FishBigeye tuna look a lot like Yellowfin
    <http://www.partyboatnj.com/yellowfin-tuna.shtml> . They are hard to
    distinguish sometimes. They swim at greater depth then Skipjack <http://www.
    partyboatnj.com/skipjack-tuna.shtml> and Yellowfin, and therefore have more
    fat to insulate them from the cold water. The body of the bigeye tuna is
    cigar-shaped (tapered at both ends). The head is pointed and the eye is
    relatively large. The color is dark metallic brownish blue to dark yellow on
    the back becoming gray or whitish below. There often is a bluish stripe on
    the side. Both bigeye and yellowfin tuna look similar, but yellowfin tuna
    have much shorter pectoral fins.

    Here is some information for those of you interested in scientific terms and
    additional details:

    Family: Scombridae Mackerels Tunas

    Genus and Species: Thunnus obesus

    Description:Tuna which cannot be distinguished by external characteristics
    can be positively identified by liver characteristics. Bigeye tuna livers
    are striated (covered with blood vessels) along the trailing edges, while
    yellowfin tuna livers are smooth. Small bigeye tuna also may be
    distinguished from albacore by the characteristics of the liver. The liver
    is heavily striated in the albacore while the bigeye tuna liver is only
    striated along the trailing edges.

     

    Personal Note;

     

    Same size fish side by side, the bigeye has a noticeably larger eye.

     

    Large Yellowfin have long whips from their 2nd dorsal and ventral fins.
    Many times broken off at market level.

     

     

     

     

      

     

    JOHN DEBEER

     


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