The Tunas
These members of the Scombridae family are widespread in temperate
and tropical waters. They are of considerable importance commercially, as well as being
important as gamefish. Tunas are pelagic, living in the open sea and moving freely.
The Blackfin Tuna is one of the smaller tunas, averaging
about 10 pounds with a maximum weight of about 40 pounds. It is the most common tuna in
the northwestern Gulf of Mexico.
The Yellowfin Tuna is known for it's yellowish tint on
it's sides and fins. It also has elongated fins on it's back and behind it's head. It is
one of the larger tunas averaging about 100 pounds with a maximum weight of about 250
pounds.
The Bluefin Tuna is one of the truly great fishes of the
world. It is dark blue above and silvery white below with a yellow streak that runs from
it's head and part way down it's side. It is capable of reaching weights in excess of
1,000 pounds. Bluefin are deep-water oceanic fishes and are extremely rare in the
northwestern Gulf of Mexico. Worldwide intensive fishing pressure has caused Bluefin
populations to decline to such levels that they are considered rare or endangered by the
NMFS.