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Salmon are marine fish, but they don't stay in the water all the time. When salmon are younger, they live in seawater. Since they are cold-water fish, they are more distributed at high latitudes.
When they reach sexual maturity, they go to freshwater to lay eggs. Autumn is their breeding season, when they descend into fresh water in droves. After breeding, the salmon that survive are returned to the ocean.
Salmon is one of our more common fish, and they have many other names, such as "Luo Guo Fish", "Mochi Cake Fish" and so on. Salmon have a special habit, and although it can be said that they are marine fish, they do not stay in the sea all the time, but have changed. When salmon are younger, they live in the ocean.
Because salmon is a cold-water fish, it is widely distributed in high latitudes, such as in the North Pacific Ocean.
However, when salmon mature, they move to freshwater to breed, known as anadromous migration. The breeding season for salmon is generally in the autumn of each year. Especially in September and October, salmon will come to freshwater rivers, and the number of salmon that come to freshwater is very large.
They swim in groups for a long time and do not retreat when they encounter canyons and waterfalls. In general, males are prone to death after breeding because of the amount of energy expended. Some females return to the ocean after breeding.
As mentioned above, salmon live in the ocean when they are young. They are most abundant in high-latitude seas because they are cold-water fish by habit, which is more suitable for living in cool waters. However, when salmon mature, it faces the problem of reproduction.
When they reproduce, they live in fresh water. After breeding, salmon return to live in the sea.
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Salmon belongs to one of the salmon orders, belongs to the salmonid family, and is a type of salmon;
Salmon is a well-known cold-water anadymous spawning migratory fish, there are 510 species of 9 suborders, 25 families, 146 genera, 82 species of pure freshwater species, they are born in the freshwater of rivers, but grew up in the waters of the Pacific Ocean, salmon is a carnivorous fish, their nature is fierce, after arriving at the sea, they prey on other fish Chunnadug for a living, and in the juvenile fish stage, they feed on the aquatic kun nucleus of benthic organisms in the water, salmon can grow up to 6 kg;
Salmon is a precious economic fish, deeply loved by people, its eggs are also the famous aquatic products of the eggplant, the nutritional value is very high, salmon is famous for its delicious meat, has always been regarded as a precious fish, the Heilongjiang River in Fuyuan County, Jiamusi City, Heilongjiang Province, China is rich in salmon, is the "hometown of salmon".
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Salmon are saltwater fish. Salmon is a cold-water anadromous spawning migratory fish, juveniles live in the ocean for 3-5 years, usually reach sexual maturity at the fourth inage, and return to the river to spawn after maturity. Salmon are born in the freshwater of rivers and rivers, but they grow up in the waters of the Pacific Ocean, so they can be said to be saltwater fish.
It is widely distributed in the Bering Sea, the North Pacific Ocean, the Sea of Okhotsk, the Sea of Japan and coastal rivers.
Body shape characteristics: body lateral flattening, dorsal and ventral outer profile symmetrical, spindle-shaped. The head length is slightly equal to the body height, the mouth is in a terminal position, the mouth is large, and the maxilla extends posteriorly to the posterior edge of the eye, obliquely downward, like a bird's beak.
The upper jaw, lower jaw, and vomer all have teeth. The eye is below the axis of the body and is larger. The dorsal fin resides in the body ** later.
The body color gradually darkens, and a marriage color of 10-12 purplish-red longitudinal markings appears on the side of the body. When reaching the spawning ground, the entire body color becomes dull. Body length can reach 100 cm.
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