The Giant bluefin tuna (for individuals exceeding 150 kilograms or around 330 pounds) and formerly as the tunny. Atlantic bluefin are native to both the western and eastern Atlantic Ocean, as well as the Mediterranean Sea. Atlantic bluefin have become extinct in the Black Sea and Caspian Sea.
Atlantic bluefin tuna are capable of reaching well over 450 kilograms (992 lb) in weight, and rival the black marlin and blue marlinas the largest Perciformes. Throughout recorded history, the Atlantic bluefin tuna has been highly prized as a food fish. This commercial importance has led to severe overfishing. The International Commission for the Conservation of Atlantic Tunas (ICCAT) affirmed in October 2009 that Atlantic bluefin tuna stocks have declined dramatically over the last 40 years, by 72% in the Eastern Atlantic, and by 82% in the Western Atlantic.
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