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How to read tuna How to read the word tuna
1, tuna read: wěi. ancient books refer to the sturgeon (xún) fish. Tuna, a kind of fish, the body is fusiform, back black-blue, belly gray-white, dorsal and anal fins behind each of the seven or eight small fins, carnivorous, living in the tropical oceans. It is an endangered animal. China's national class Ⅰ protection of wild animals.

2. The body is long, stout and rounded, streamlined, tapering backward and slender at the base of the tail, and the caudal fin is forked or crescent-shaped. There are obvious ridges on both sides of the caudal peduncle, and a row of small fins behind each of the dorsal and anal fins. It has a torpedo-shaped body with a slightly rounded cross-section. The shape of the tuna is also peculiar in that its entirety is streamlined, with a pectoral armor that extends along the head as if it were a unique balance board capable of adjusting the current. In addition, the tuna's tail is half-moon shaped, enabling it to sprint forward very quickly in the ocean. Strongly muscled and crescent-shaped tail fins, the shoulders have a pectoral armor made up of tapering scales, darker on the dorsal side and silvery white on the ventral side, usually with iridescent rays and stripes. Another feature is a well-developed network of blood vessels under the belly, which serves as a thermoregulatory device for long-distance, slow-speed swimming.

3, tuna belongs to the dry mackerel family tuna genus, so there are other kinds of tuna, such as black tuna, short tuna, yellowfin tuna, albacore tuna, green sweet tuna, southern tuna and so on. One of the black tuna is the Japanese restaurant expensive TORO, a piece of less than 200 grams for nearly a thousand dollars. Tuna contains a lot of vitamin E, recently discovered that tuna also contains a trace element called selenium. Although the selenium content in the human body is very small, but selenium is an essential substance of the human body, with the prevention of sclerosis of the organs, slowing down the function of aging. Selenium also has the ability to prevent the generation of lipid peroxides in the body. Protect the cellular biofilm from oxidative decomposition, its role than vitamin E 50 to 100 times greater.