Bluefin tuna is also called bluefin tuna. Bluefin tuna, the scientific name of Atlantic bluefin tuna, includes Atlantic bluefin tuna and northern bluefin tuna. In biological classification, it belongs to marine fish, chordates, teleost, passeriformes, Sparidae, tuna and tuna in the animal kingdom. Bluefin tuna is not only the largest species in tuna, but also one of the species with great economic value, with a body length of 1~3 meters, of which the largest is over 4 meters long and weighs 684 kilograms. Bluefin tuna is widely distributed in the Pacific Ocean all over the world, and it is most common in the northwest Pacific Ocean in adulthood, and is distributed in the Yellow Sea, East China Sea and South China Sea in China.