CATDOLL : CATDOLL: What kind of fish is a domestic fish?

1. What kind of fish is domestic fish?

Domestic fish refers to the four major fish species that are artificially farmed: silver carp, bighead carp, grass carp and green carp.

Domestic fish originally refers to freshwater fish that can be artificially raised for prey, emphasizing relatively natural growth and wide distribution. Traditional domestic fish mostly refer to carp, flower carp, silver carp, and grass carp. Nowadays, there are many artificially raised fish species, including crucian carp, bream, black carp, yellow croaker, tilapia, loach, and yellow eel. The popular four major domestic fishes refer to: silver carp (silver carp), silver carp (silver carp), and black carp (grass carp).

Before the Tang Dynasty, carp was the most widely farmed freshwater fish. However, because the Tang royal family was named Li, the breeding, fishing and sale of carp were all prohibited. Fishermen had to engage in the production of other species, which gave rise to the four major carps: black carp, grass carp, silver carp and bighead carp.

2. What are the four major carps?

1. Black carp

It belongs to the Cypriniformes, Cyprinidae, and Black Carp. It is also known as "black carp" and "snail green carp". Its body is cylindrical with a round belly. It is dark blue in color, with a darker back and a grayish white belly. All fins are grayish black. It lives mostly at the bottom of the water and prefers slightly alkaline, thin water.

2. Grass carp

It belongs to the Cypriniformes, Cyprinidae, and Grass Carp. It is also known as "grass carp", "oil carp", "grass carp", "white carp", "thick fish", "sea carp", and "mixed carp". Its body is slightly cylindrical, with a slightly flat head, a flat tail, and a round belly without abdominal ridges. Its body is tea yellow, its back is blue-gray, its abdomen is grayish white, its pectoral and pelvic fins are slightly grayish yellow, and the other fins are light gray. Its body is covered with large round scales. It mostly lives in the middle and lower layers of the water and near the shore with a lot of aquatic plants. It is lively, swims quickly, and often forages in groups.

3. Silver carp

It belongs to the Cypriniformes, Cyprinidae, and Silver Carp genus. It is also known as "silver carp", "water silver carp", "jumping silver carp", and "silver carp". Its body is flattened laterally, with a head about one-fourth of its body length. There is an abdominal ridge from the bottom of the pectoral fin to the anus. The back of the body is gray, the abdomen is silvery white, and the scales are small and dense. It mostly lives in the middle and upper layers of the water. It is lively and good at jumping, but its tolerance to low oxygen is extremely poor. It is very easy to die from lack of oxygen in the water.

4. Bighead carp

It belongs to the taxonomy of the order Cypriniformes, family Cyprinidae, genus Bighead carp, and is also known as "silver carp", "fathead fish", "baotou fish", "bighead fish", "black carp", "silver carp", and "male fish".

Its body is flattened laterally, with a large head that accounts for about one-third of its body length. Its abdomen is rounder before the base of the pelvic fin, and there is an abdominal ridge from the back to the anus. Its body color is darker with irregular black spots. Its back and upper sides are slightly black, its abdomen is silvery white, its fins are gray, and its scales are small. It mostly lives in the middle and upper layers of water. It is docile and does not like to jump.

Additional information

The four major carps are fish that live in the northern warm temperate zone, monsoon climate, large plains, and large rivers and lakes. Their original natural distribution area was mainly in the eastern plains of China. After more than a thousand years of artificial selection, they have become excellent aquatic fish.

In the Northern Song Dynasty, the breeding of the four major carps continued to expand to a wider area, and the breeding in the Yangtze River and the Pearl River gradually prospered. According to Zhou Mi's record in "Guixin Miscellaneous Notes" in the late Southern Song Dynasty, the capture, transportation, selection and sale of the four major carp fry had reached a professional level at that time. In addition, the mixed breeding technology of the four major carps was produced in the Song Dynasty and quickly became popular.

The four major carps are black carp, grass carp, silver carp and bighead carp.

Silver carp is also called silver carp. It lives in the upper layer of the water and eats phytoplankton such as green algae.

Bighead carp has a large head, commonly known as "fathead fish", also known as silver carp. It lives in the middle and upper layers of the water and eats protozoa, water fleas and other zooplankton;

Grass carp live in the middle and lower layers of the water, swallowing the vegetation in the water and then excreting it, waiting for the feces to breed microorganisms before eating it and filtering out the microorganisms in it;

Black carp lives at the bottom of the water and eats mollusks such as snails, clams and mussels.

Raising these four types of fish together can improve the utilization rate of bait and increase fish production.

Additional information

Details of the four major fish

The total area of ​​the National Aquatic Germplasm Resources Protection Zone for the Four Major Carps in the Chongqing section of the Yangtze River is 12,310 hectares, of which the core area is 3,375 hectares and the experimental area is 8,935 hectares. The special protection period for the core area is from February 1 to June 30.

The main protected objects are the four major carps. Other protected species include the Acipenser dabryanus, the white sturgeon, the rosy barbel, the copper fish, the round-mouthed copper fish, the Chinese spiny barb, the rock carp, the southern catfish, the long-snout d, the bigfin, the long-fin snout L, the black carp, the giant salamander, and the otter.

Reference source: Baidu Encyclopedia - Four major fish

Before the Tang Dynasty, carp was the most widely farmed freshwater fish. However, because the Tang royal family was named Li, the breeding, fishing and sale of carp were all prohibited. Fishermen had to engage in the production of other species, which gave rise to the four major carps: silver carp, grass carp, bighead carp and black carp.

The four major carps are black carp, grass carp, silver carp and bighead carp.

Grass carp, carp, crucian carp, silver carp

3. Can fish farming make money?

The answer is yes, but it depends on what kind of fish you are raising, where you raise them, what kind of feed you feed them, and your management methods.

"Water, seed, bait, dense mixing, wheel, prevention and control" is the eight-character intensive breeding method summarized by my country's fish farming industry for thousands of years. As long as these eight contents are done well, the fish can grow healthily. The next step is the sales link, which is your personal grasp of the market.

Yes, fish farming is very profitable, and the market has been good in recent years.

This year, fish farmers have made a lot of money

A man discovered the secret to making money in the fish farming industry and earned more than 10 million yuan in sales annually from fish farming

4. Where are Chinese eels mainly sold?

Do you raise eels at home?

5. What kind of fish is shad? Where can I buy it?

The shad is a river and sea migratory fish. It is rich in nutrition and has high medicinal value. It is listed in the Red List of Endangered Animals in China. Today, it is difficult for people to see the beautiful demeanor of the shad. The shad has an oblong body and is laterally flattened. It is about 24 cm long, and the largest one is more than 50 cm long. The head is laterally flattened, with a blunt tip at the front end, a large mouth, a terminal position, an inclined mouth cleft, a slightly long lower jaw, a notch in the middle of the upper jaw, and the rear end reaches below the rear edge of the eye. The gill rakers are fine and dense. The scales are large and thin, with fine lines on them; there is no lateral line, and there are 41 to 47 vertical scales on the sides of the body; there are 16 to 17 horizontal scales. The abdomen is narrow, and there are large and sharp ridge scales on the ventral surface, arranged in a serrated edge, 17 to 19 in front of the pelvic fin, and 12 to 15 behind the pelvic fin. The pelvic fins are extremely small, and there are large and long axillary scales at the base of the pectoral and pelvic fins. There are 17 to 18 dorsal fins, and the starting point is opposite to the pelvic fins. Anal fin 18 to 20. Caudal fin deeply forked, covered with small scales. Back and head grayish black, upper side slightly blue-green, lower side and abdomen silvery white, pelvic and anal fins grayish white, caudal fin edge and dorsal fin base light black. Shad swim upstream during the reproductive season from April to June, spawning and breeding in the middle and lower reaches of the river. The main food is plankton, and sometimes other organic matter. Distributed in the South my country Sea and the East China Sea, it is also found in the middle and lower reaches of the Yangtze River, Pearl River, Qiantang River and other basins.

The body is oblong and relatively flattened, with a general body length of 25 to 40 cm. The mouth is large and terminal. The snout is pointed, and the lower jaw is slightly longer than the upper jaw. There is a significant depression in the middle of the upper jaw, and there are no teeth on both the upper and lower jaws. The fat eyelids are well developed, almost covering half of the eyes. The gill openings are large. The scales are large, round and thin, with fine lines on them. There is no lateral line. There are large and sharp ridged scales on the abdomen, arranged in a serrated shape. There is a pair of pectoral fins and pelvic fins, and the pelvic fins are very small; there is one dorsal fin and one anal fin, with 14 to 15 dorsal fin rays and 16 to 18 anal fin rays; the caudal fin is deeply forked and covered with small scales. The back and head of the body are gray with a slight blue sheen, and the sides of the body and the abdomen are silvery white. The pelvic and anal fins are grayish white, and the other fins are dark blue-green.

【Origin】

Shad is a migratory fish. When they enter rivers to spawn, the fish gather in groups, forming a peak fishing season. The main production area is in the Yangtze River Basin, with more production in Zhenjiang and Nanjing downstream. It was also seen in the Xijiang River of the Pearl River in the 1970s and 1980s.