Shape Characteristics Of Tuna

Tuna w ě i. In ancient times, it refers to sturgeon and white sturgeon. It is also known as elephant fish, swordfish and harp fish. According to the records of Wu Luji of the Three Kingdoms, "Mao Shi, Grass, Birds, Animals, Insects, Fish and Sparse", the tuna is green and black, with a small and pointed head, like an iron handrail, and its mouth is under the chin. Its armor can grind ginger, and the largest one is only seven or eight feet. The big one is the king tuna, and the small one is the uncle tuna.
In modern times, tuna, also known as tuna and tuna, is a marine organism of mackerel family, most of which belong to the genus Tuna. The tuna swims very fast, with an instantaneous speed of 160 kilometers per hour and an average speed of 60-80 kilometers per hour. The meat color of tuna is red, which is caused by the large amount of myoglobin carried in the muscle of tuna. Some tuna can use the metabolism of swimming muscles to make the temperature of blood in the body higher than the outside water temperature, for example: bluefin tuna (T.thynnus, T. maccoyii, T. orientalis). This physiological function makes the tuna adapt to a wide range of water temperature and can live in water with lower temperature.