- Types:
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Thunnus alalunga, albacore, long-fin tunny
large pelagic tuna the source of most canned tuna; reaches 93 pounds and has long pectoral fins; found worldwide in tropical and temperate waters
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Thunnus thynnus, bluefin, bluefin tuna, horse mackerel
largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics
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Thunnus albacares, yellowfin, yellowfin tuna
may reach 400 pounds; worldwide in tropics