Chinese name: salmon.
Latin scientific name: Oncorhynchus keta
Binary method: Oncorhynchusketa
Field: animal kingdom
Phylum: Chordata phylum
Subphylum: Vertebrate subphylum
Class: teleost fish
Subclass: Kiwifruit
Objective: Herringiformes.
Type: salmon.
The local names are Maha, Salmon, Salmon and Takagi. Commonly known as North Trout, Dafa Fish, Dafa Fish, Guoduo Fish, Luoguo Fish, Gudong Fish, Homoptera Fish, Meng Qi Fish, Spotted Trout and Flower Trout. Also known as printed salmon or dog salmon. Salmonidae (Salmonidae) is a light-colored food fish in the North Pacific Ocean, and its scientific name is Oncorhynchus keta.
It weighs 3.6 kilograms (8 pounds). During the autumn breeding season, it migrates more than 3,200 kilometers (2,000 miles) along the yukon river in North America. In spring, young fish hatch for several weeks and then enter the sea. Hemp salmon, also known as salmon, is famous for its delicious meat and rich nutrition, and has always been regarded as a valuable fish. Heilongjiang, China is rich in salmon, which is the "hometown of salmon". Big trout
This salmon has a long, flat body and a prominent nose, which looks like a bird's beak. It is a fierce carnivorous fish with a big mouth and sharp teeth. They have lived in the sea for four years. Every year in August and September, when they are sexually mature, they swim in droves from the far sea to the offshore, enter the river, take the Wan Li Road, go upstream and return to their birthplace-Heilongjiang. After entering the river, they stopped eating, and some salmon entered the cold tributaries of Heilongjiang, such as Wusuli River, Huma River and Songhua River, in order to find the most ideal spawning ground. The color of the salmon that is ready to lay eggs will change, and the color will be brighter. Before laying eggs, the females use their bellies and caudal fins to remove silt and weeds from the river bottom, stir fine sand and gravel, and build an oval spawning ground. Then, the male and female fish get married and lay eggs, and the discolored salmon lays eggs.
. After spawning, the exhausted parent fish will be guarded by the egg bed until they die. /kloc-After more than 0/00 days, the small fish hatched from the eggs. The next spring, they swam downstream to the sea. However, they will not forget their hometown. Once they are sexually mature, they will go through thousands of difficulties and swim back to their hometown. The economic value of salmon is very high, not only the meat is delicious, but also the roe is more valuable. Its fish eggs are much larger than ordinary fish eggs, about 7 mm in diameter, purplish in color, transparent like amber, and have high nutritional value. It is a good raw material for caviar. There are a lot of salmon in Lake Baikal, and the catch is very large.
Edit the living environment of this paragraph.
Salmon eggs and seedlings can only survive in fresh water, and they usually lay their eggs in gravel areas in the upper reaches of rivers in fresh water systems. Eggs hatch into seedlings and grow for a period of time, then go downstream into the sea of salt water system, grow and develop in the ocean with rich materials and accumulate energy. After growing for about 4 years, they will migrate to freshwater rivers to lay eggs. Salmon mainly inhabits the oceans in the northern hemisphere, with the largest number in the Sea of Okhotsk and the Bering Sea.
Edit the morphological characteristics of this paragraph
Salmon is generally about 60 cm long and flat on its side, slightly like a spindle; From the back of the head to the front of the dorsal fin base, the dorsal fin gradually rises, starting from the highest point of the body, and then gradually bends to the tail. The head is flat, the snout is prominent and slightly curved. The mouth crack is large and looks like a bird's beak, especially in the breeding period of male fish, which bends like a clip, making the upper and lower jaws mismatch. The maxilla is obviously free, and the posterior end extends to the posterior edge of the eye. The upper and lower jaws have a row of sharp teeth, which are sharp and inclined inward. Except for the four pairs of teeth at the front of the mandible, the other teeth are very small. Small eyes and scales, arranged like tiles. The lipid fin is very small and very backward. The caudal fin is deeply forked. When living in the ocean, the body color is silvery white, and soon after entering the river, the color becomes very bright. The back and sides first turn yellow-green, and then gradually darken, showing cyan-black, and the abdomen is silvery white. There are 8- 12 orange wedding stripes on the side of the car body. The female fish is thicker, the male fish has larger stripes, the snout, jaw, gill cover and abdomen are cyan or dark, and the gluteal fin and ventral fin are gray. At the spawning ground, the body color is darker. North American salmon turns red
Salmon in North America turn red when they lay eggs.