“The dispersal of muscle heat is a particular issue and can lead to the animal, in effect, cooking itself from the inside out.
“While recreational fishing measures are being considered we remind anglers that this is an endangered species and it should not be targeted.”
Bluefin are one of the largest species of tuna and can live up to 40 years.
The World Wildlife Fund says that if tuna were a car they would be the Ferrari of the ocean because they are sleek, powerful, and made for speed.
There are several species but the Atlantic bluefin can reach 10ft in length and weigh as much as 1,500 lbs, more than a horse, and can swim up to 43 miles per hour across long distances.
They can be worth hundreds of thousands of pounds on the black market and one sold for a record £1.09 million at a Tokyo auction in 2013.