The BLACK TREVALLY (called ulua
la'uli) has strengthened scales that reinforce its tail. Also called the
Black Jack, this fish is easy to identify because of these scales that make a
dark lined pattern leading to the tail. They're typically almost black to
dark gray, and they have a dark spot on the upper gill cover. They're
found alone or in pairs, but rarely ever in groups and can be seen near
drop-offs adjacent to deep water. They can grow to be 3 feet long.
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