Famous for Yellowfin Tuna, but Blackfin, Bigeye and Albacore are all common in the Turks and Caicos (often 5 lines will hook up simultaneously with 3 types of Tuna!)
Big heavy weight fighters, the challenge is not only bringing a Tuna to the boat but doing it before the Sharks steal your catch ! Yellowfin typically range from 20lb to 120lbs
This is probably the most colorful of all the tunas. The back is blue black, fading to silver on the lower flanks and belly. A golden yellow or iridescent blue stripe runs from the eye to the tail, though this is not always prominent. All the fins and finlets are golden yellow though in some very large specimens the elongated dorsal and anal fins may be silver edged with yellow. The finlets have black edges. The belly frequently shows as many as 20 vertical rows of whitish spots.
At one time it was not recognized as a separate species but considered a variation of the yellowfin tuna. They are similar in many respects, but the bigeye second dorsal and anal fins never grow as long as those of the yellowfin. In the bigeye tuna the margin of the liver is striated and the right lobe is about the same size as the left lobe, in the yellowfin tuna the liver is smooth and the right lobe is clearly longer than either the left or the middle lobe.
The most distinguishing feature of this member of the tuna and mackerel family is its very long pectoral fins that reach to a point beyond the anal fin. The pectoral fins of other adult tunas may also be moderately long, but never extend all the way to the anal fin. Though the very long pectoral fins readily distinguish the adult albacore from other adult tunas, it should be noted that juvenile albacore might have shorter pectoral fins.
Blackfin tuna are the smallest tuna species, generally growing to a maximum of 100 centimetres (39 in) in length and weighing 21 kg (46 lbs). Blackfin have oval shaped bodies, black backs with a slight yellow on the finlets, and have yellow on the sides of their body.
These tuna do not consume as much fish in their diet as other tunas, and will eat the tiny larvae of king shrimp or mantis shrimp, true shrimp, and crabs, as well as small fish. They do, of course, also eat juvenile and adult fish and squid. They are a short-lived, fast-growing species; a 5 year old fish would be considered old.