Fish on the left, there on the right, pronounced [wěi] with the same (wei) homophone, here are the regular sources collected for you.

Spelling wěi

Parts ? 魚?

Stroke?14

Five Elements? Earth

Traditional characters? 鲔

拼音输入：wei

五笔?QGDE

生词本

基本释义? Detailed definition?

1. [~ fish] with a fusiform body, blue-black back and gray-white belly, lives in tropical oceans and eats small fish and other animals.

2. Ancient books refer to sturgeon.

Basic definition? Detailed definition

〈Name〉

鲟鱼和鳇鱼的古称

鲔鱼,色青黑,头小而尖,似铁兜鍪,口在颔下,其甲可以磨姜,大者不过七八尺. The big ones are called king tuna and the small ones are called uncle tuna. --Wu - Lu Ji, Three Kingdoms, "Mao Shi, grass, trees, birds, animals, insects and fish"

The tuna is a fusiform fish with a spindle-shaped body. The body is fusiform, dorsal blue-black, ventral gray, dorsal and anal fins behind each of the seven or eight small fins. Lives in tropical oceans, eat small fish and other animals

White sturgeon is the ancient name. Also known as elephant fish, swordfish, piano fish. Ichthyophthysidae. The body is pike-shaped, naked without scales, no bone plate. Dark gray or light gray. Head large, large mouth, small eyes, prominent sword-like kiss, as long as the elephant trunk. The gill cover membrane is developed, like an elephant ear. It is a specialty of China.

Tuna, a kind of fish, the body is fusiform, the back is black-blue, the belly is gray-white, behind the dorsal and anal fins there are seven or eight small fins, carnivorous, living in the tropical ocean. It is an endangered animal. China's national Grade Ⅰ protected wildlife.

Morphological Characteristics:

Body shape is long, stout and rounded, streamlined, tapering backward to a fine tip and slender tail base, caudal fin is forked or neo

lunar. The caudal peduncle has distinct ridges on both sides, and the dorsal and anal fins each have a row of small fins behind them. It has a torpedo body shape, which is slightly rounded in 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.

Classification and Nutrition:

Tuna belongs to the genus Tuna in the family of dry mackerel, and as such there are other species of tuna, such as black tuna, short tuna, yellowfin tuna, albacore tuna, green sweetlip tuna, southern tuna ..... The first is the black tuna, which is the most popular type of tuna in Japanese cuisine. One of the black tuna is the Japanese restaurant expensive TORO, a gram 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,

Distribution:

Tuna belongs to the perch family mackerel family, the Chinese world is also known as the "tuna (fish)". It is an oceanic warm-water migratory fish, mainly distributed in the low and mid-latitude sea area, in the Pacific Ocean, the Atlantic Ocean, the Indian Ocean are widely distributed. China's East China Sea, the South China Sea is also distributed. With the tuna is most similar to the bonito fish, the simplest way to distinguish between bonito belly 4-6 black longitudinal bands, other similar species such as the rudder bonito, bonito and other dark longitudinal bands. The tuna, on the other hand, does not have any black spots or dark longitudinal bands on its body. The tuna's ventral fins are significantly longer than those of the skipjack tuna and the fox skipjack tuna.

Scientific studies have shown that most tuna inhabits the sea at a depth of 100-400 meters, juvenile bigeye tuna and yellowfin tuna and skipjack tuna inhabits the surface waters of the ocean, generally not more than 50 meters deep, while adult bigeye tuna and yellowfin tuna inhabits the water deeper, and the bigeye tuna's inhabited water is deeper than the yellowfin tuna.

It has a long spawning period and a wide range of spawning areas, making it possible for tuna to spawn throughout the year in a variety of waters, and with its strong reproductive capacity, diners around the world are able to enjoy its delicious flavor

(Source: wikipedia)