Tuna is also called tuna and tuna. It is a kind of fish that lives in the upper and middle waters of the ocean, distributed in the vast tropical, subtropical and temperate waters of the Pacific Ocean, Atlantic Ocean and Indian Ocean, and belongs to oceanic long-distance migratory fish. ?

How many kinds of tuna are there?

In terms of biological classification, tuna in a broad sense refers to 30 species of fish in the family Sparidae, Swordfish and Swordfish. The species with great economic value include bluefin tuna, masu tuna, bigeye tuna, yellowfin tuna, albacore tuna and bonito, among which bluefin tuna, masu tuna, bigeye tuna and yellowfin tuna can be used as raw materials for sashimi; Albacore tuna and bonito are mainly used to make canned tuna, but recently albacore tuna is also used to make sashimi. ?

Tuna is used as sashimi, and the quality from high to low is bluefin tuna, masu tuna, bigeye tuna and yellowfin tuna. The output of bluefin tuna and masu tuna is low, and their prices are very high. Common tuna sashimi are made of bigeye tuna and yellowfin tuna. ?

There are two kinds of tuna. One kind of tuna is red, commonly known as tuna. However, white tuna is another kind of tuna, and its meat is even more tender and delicious than red tuna. Tuna meat is rich in hemoglobin, and high-quality tuna meat is dark red. It turns white when cooked. What if it's fresh white tuna? It shows that the quality of meat is poor and can't be eaten.