Atlantic Spadefish usually are between 1 to 1 1/2 feet and can grow to 3 feet.
They make their home in schools at depths of 10 to 70 feet.
Spades are common along the Florida coast and in the Bahamas, and are uncommon in the Caribbean, Bermuda, and the Gulf of Mexico.
Being of a very curious nature, they will often come out to be with divers.

Reference: REEF FISH IDENTIFICATION, 2 ed. by Paul Humann