Misgurnus anguillicaudatus is a warm-water fish, which lives in the range of 15-30℃, and the optimum water temperature is 24-27℃. It is easy for farmers to build ponds to cultivate loach, with less investment, quick effect and easy operation. 1. Build a pool: build a pool in front of and behind the house and around the courtyard, and choose a place with water, shelter from the wind and sun. Generally, pools are made of bricks and stones, and the depth of pools should be around 1 m. After the pool is built, it should be leveled with cement, dried, put into 0.5-foot fertilizer mud, and injected with 1 foot water for sowing. 2. Sowing: After the pond is completed, it will be put into loach seedlings according to the calculation of 1- 1.5 kg per square meter. Seedlings can be purchased in the market or propagated and captured by themselves; In any case, we should choose a robust and harmless loach seedlings with uniform size, and match it according to the proportion of three females and one male. The method of male and female identification can be observed by its appearance: male head tip, narrow and long pectoral fin, body thickness as tail end, and bone piece at the base of tail tip fin; The female's head is oval and flat. Female loach has strong oviposition ability. A female loach can lay more than 4000 eggs from early summer to early autumn, usually 2-3 times a year, laying more than 4000 eggs 10000. 3. Feeding: As loach is an omnivorous fish, cow dung, rice bran, or wheat and fly maggots can be used as bait, generally three times a day. The feeding amount is generally determined according to the feeding situation. Fertilization: In the process of loach feeding, some organic fertilizers can be properly supplemented, but the fertilization must not be too frequent, and the pool water should be changed frequently, usually once every 10- 15 days. 5. Catch: To catch loach, first of all, we should drain the water in the pond, and adopt the method of catching large and letting small to ensure that there is a certain amount of loach seedlings in the pond, which is conducive to secondary culture and high yield. Note: 1, Misgurnus anguillicaudatus and Monopterus albus should not be mixed in the same pool, because Monopterus albus will devour Misgurnus anguillicaudatus. Loach is put in the eel pond to prevent the eels from intertwining. 2. The side wall of the pool must be about 1.5 feet above the water surface, because the loach is active to prevent it from escaping. 3. Urban residents and families who have no conditions to build ponds can also raise them in tanks and pots. Summer solstice is the best time for breeding and planting, so we should hurry to sow.

What conditions and temperatures are needed to raise loach?

Natural propagation method of loach.

After the spring, trim the fish pond, disinfect it with quicklime and inject new water. After the medicinal properties of the pond water disappear, put the parent fish into the pond according to the male-female ratio of 1:2, and put about 300 grams per square meter. When the temperature of the pool water rises to about 20℃, fish nests made of brown chips, willow roots or aquatic plants should be placed in the pool. Always check and clean the mud, dust and dirt on the fish nest after laying, so as not to affect the adhesion effect of the eggs when the loach lays eggs. Misgurnus likes to lay eggs in rainy days or when the water temperature rises suddenly. Oviposition usually starts in the early morning and ends at about 10 am, and the oviposition process takes 20 ~ 30 minutes. When spawning, the parent fish chase fiercely, and at the peak, the male loach wraps around the front abdomen of the female loach, completing the process of spawning and fertilization. After spawning, fish nests with eggs should be taken out in time and hatched in another pond to prevent parent fish from swallowing eggs. At the same time, new fish nests are added to allow parent fish that have not laid eggs to continue to lay eggs. The spawning pond should prevent snakes, frogs and mice from hurting the parent fish.

What should I pay attention to when raising loach?

The aquaculture pond is built in a place with good light, warm ventilation, convenient transportation, sufficient water, convenient water supply and drainage, and no pollution sources within 3 kilometers. The loach pond soil is neutral or slightly acidic clay. Area100 ~ 300m2, pool depth 80 ~100cm, water depth 30 ~ 50cm. Disinfect the pond with quicklime 15 days before stocking loach species. The pool water 10 cm deep, and the whole pool is sprinkled with quicklime100g per square meter. Before stocking loach, disinfect it with 3% saline bath 10 minute. Choose 50 ~ 60 loach varieties with a body length of 3 ~ 4 cm per square meter at noon on sunny days. Feed-fed loach has a variety of eating habits, and small animals, plants, microorganisms and organic debris in the water are all its favorite foods. Artificial feeding should also be fed with animal feed such as maggots, earthworms, small miscellaneous fish, mussels, fish meal, livestock and poultry leftovers, and plant feed such as wheat bran, rice bran, bean dregs and cake meal. Regular, fixed-point, qualitative and quantitative feeding. The feeding amount depends on water quality, weather and feeding conditions. When the water temperature is suitable, feed it once a day in the morning, at noon and at night, and once a day in the morning and evening when the water temperature is low. The percentage of feeding amount to the body weight of pond loach: March1%~ 2%; From April to June, 3% to 5%; July-August10% ~15%; In September, 4%. The feeding ratio of plant feed to animal feed at different water temperatures: when the water temperature is lower than 10℃ or higher than 30℃, feed less or not; Water temperature 1 1 ~ 20℃, plant feed accounts for 60% ~ 70%, and animal feed accounts for 30% ~ 40%. The water temperature is 2 1 ~ 23℃, and the plant feed and animal feed account for 50% respectively. The water temperature is 24 ~ 29℃, plant feed accounts for 30% ~ 40%, and animal feed accounts for 60% ~ 70%. Water quality management After loach stocking, topdressing should be done in time according to the fatness and thinness of water quality, and plankton should be cultivated to keep the water fresh and cool all the time. When the water temperature reaches 30℃, replace fresh water in time and increase the depth to reduce the water temperature and prevent floating head. It is found that loach often swims to the surface and swallows, indicating that there is no oxygen in the water, so fertilization should be stopped and fresh water should be injected immediately. During the wintering period, it is not necessary to feed loach from 65438+February to February of the following year. It is only necessary to increase the depth of the pond, put pig manure in the corner of the pond, raise the water temperature, and ensure the safe wintering of loach. Daily management patrol the pond once every morning and evening to check the activities, eating and diseases of loach. At the same time, observe whether there is leakage in the culture pond and whether the loach escapes. The cement pool should remove the residual feed every day, and make daily records. = = = = = = = = = Classification of artificial feeding of loach: other practical technologies/scope of application: not limited to (1) special ponds for raising loach. Generally, it is a farming method adopted by producers specializing in loach farming. The bottom of the pond should be mud. If it is a cement pool, mud with a depth of 15-20cm should be paved. The pond area should not be too large, and about one acre is appropriate. Each acre can accommodate 50,000-65,438 thousand+seedlings with a plant length of 3-4 cm. Before releasing seedlings, base fertilizer should be applied, mainly organic fertilizer, and a large number of zooplankton should be cultivated as bait for trowels. After releasing seedlings, feed and organic fertilizer should be gradually strengthened. Feed types mainly include rice bran, bean cake, bran, bean dregs, silkworm pupa powder, earthworm, food processing waste and so on. Fertilizers include human livestock manure, crop straw compost and so on. If the water temperature is higher than 30℃ or lower than 10℃, the feed rate should be reduced. Generally, it can be caught in August 8- 10/0, and the high yield can reach 250-400 kg per mu. The length of each tail is about 15cm, and the weight is 10- 15g, which meets the commodity specifications. (2) Raising loach in paddy field. When feeding Misgurnus anguillicaudatus in paddy field, natural food organisms such as earthworm, chironomid larva, Daphnia, weeds and so on can be used, and a small amount of feed can be fed, which can obtain good economic benefits. Because of its strong vitality, loach can get into wet mud even when basking in the sun in rice fields, and maintain its life through intestinal tract and skin breathing. Therefore, the trowel is one of the ideal objects for rice cultivation. In the construction of rice fields, like raising other fish, one or several fish slips are dug in the field, with an area of 2-3 square meters and a depth of about 50 cm. The fish chute is connected with a fish ditch, which is shaped like a field or a well. Fishing facilities should be set at the entrance and exit to prevent escape. Loach seedlings 15000-20000 with a body length of about 3 cm per mu of paddy field. Pay attention to avoid using lime and pesticides, feed and fertilize properly, and catch the rice harvested in autumn, or continue to irrigate and breed, and then catch it in the next spring. Generally, 30-50 kg loach can be harvested per mu of rice field. In addition, a certain amount of silt can be stocked on the water surface of aquatic plants such as lotus root, lotus planting and water bamboo. ......

What are the conditions for breeding loach?

The aquaculture pond is built in a place with good light, warm ventilation, convenient transportation, sufficient water, convenient water supply and drainage, and no pollution sources within 3 kilometers. The loach pond soil is neutral or slightly acidic clay. Area100 ~ 300m2, pool depth 80 ~100cm, water depth 30 ~ 50cm. Disinfect the pond with quicklime 15 days before stocking loach species. The pool water 10 cm deep, and the whole pool is sprinkled with quicklime100g per square meter. Before stocking loach, disinfect it with 3% saline bath 10 minute. Choose 50 ~ 60 loach varieties with a body length of 3 ~ 4 cm per square meter at noon on sunny days. Feed-fed loach has a variety of eating habits, and small animals, plants, microorganisms and organic debris in the water are all its favorite foods. Artificial feeding should also be fed with animal feed such as maggots, earthworms, small miscellaneous fish, mussels, fish meal, livestock and poultry leftovers, and plant feed such as wheat bran, rice bran, bean dregs and cake meal. Regular, fixed-point, qualitative and quantitative feeding. The feeding amount depends on water quality, weather and feeding conditions. When the water temperature is suitable, feed it once a day in the morning, at noon and at night, and once a day in the morning and evening when the water temperature is low. The percentage of feeding amount to the body weight of pond loach: March1%~ 2%; From April to June, 3% to 5%; July-August10% ~15%; In September, 4%. The feeding ratio of plant feed to animal feed at different water temperatures: when the water temperature is lower than 10℃ or higher than 30℃, feed less or not; Water temperature 1 1 ~ 20℃, plant feed accounts for 60% ~ 70%, and animal feed accounts for 30% ~ 40%. The water temperature is 2 1 ~ 23℃, and the plant feed and animal feed account for 50% respectively. The water temperature is 24 ~ 29℃, plant feed accounts for 30% ~ 40%, and animal feed accounts for 60% ~ 70%. Water quality management After loach stocking, topdressing should be done in time according to the fatness and thinness of water quality, and plankton should be cultivated to keep the water fresh and cool all the time. When the water temperature reaches 30℃, replace fresh water in time and increase the depth to reduce the water temperature and prevent floating head. It is found that loach often swims to the surface and swallows, indicating that there is no oxygen in the water, so fertilization should be stopped and fresh water should be injected immediately. During the wintering period, it is not necessary to feed loach from 65438+February to February of the following year. It is only necessary to increase the depth of the pond, put pig manure in the corner of the pond, raise the water temperature, and ensure the safe wintering of loach. Daily management patrol the pond once every morning and evening to check the activities, eating and diseases of loach. At the same time, observe whether there is leakage in the culture pond and whether the loach escapes. The cement pool should remove the residual feed every day, and make daily records. = = = = = = = = = Classification of artificial feeding of loach: other practical technologies/scope of application: not limited to (1) special ponds for raising loach. Generally, it is a farming method adopted by producers specializing in loach farming. The bottom of the pond should be mud. If it is a cement pool, mud with a depth of 15-20cm should be paved. The pond area should not be too large, and about one acre is appropriate. Each acre can accommodate 50,000-65,438 thousand+seedlings with a plant length of 3-4 cm. Before releasing seedlings, base fertilizer should be applied, mainly organic fertilizer, and a large number of zooplankton should be cultivated as bait for trowels. After releasing seedlings, feed and organic fertilizer should be gradually strengthened. Feed types mainly include rice bran, bean cake, bran, bean dregs, silkworm pupa powder, earthworm, food processing waste and so on. Fertilizers include human livestock manure, crop straw compost and so on. If the water temperature is higher than 30℃ or lower than 10℃, the feed rate should be reduced. Generally, it can be caught in August 8- 10/0, and the high yield can reach 250-400 kg per mu. The length of each tail is about 15cm, and the weight is 10- 15g, which meets the commodity specifications. (2) Raising loach in paddy field. When feeding Misgurnus anguillicaudatus in paddy field, natural food organisms such as earthworm, chironomid larva, Daphnia, weeds and so on can be used, and a small amount of feed can be fed, which can obtain good economic benefits. Because of its strong vitality, loach can get into wet mud even when basking in the sun in rice fields, and maintain its life through intestinal tract and skin breathing. Therefore, the trowel is one of the ideal objects for rice cultivation. In the construction of rice fields, like raising other fish, one or several fish slips are dug in the field, with an area of 2-3 square meters and a depth of about 50 cm. The fish chute is connected with a fish ditch, which is shaped like a field or a well. Fishing facilities should be set at the entrance and exit to prevent escape. Loach seedlings 15000-20000 with a body length of about 3 cm per mu of paddy field. Pay attention to avoid using lime and pesticides, feed and fertilize properly, and catch the rice harvested in autumn, or continue to irrigate and breed, and then catch it in the next spring. Generally, 30-50 kg loach can be harvested per mu of rice field. In addition, a certain amount of loach can also be stocked on the water surface of aquatic plants such as lotus root, lotus planting and water bamboo. Generally, there are about 1000 tails in an acre. ......

What are the requirements for water quality in raising loach?

The artificial culture of loach is more and more accepted by farmers, but the water quality of loach culture is easy to deteriorate because the ponds are generally shallow and mostly in still water. Therefore, the stocking density should be appropriate, and fresh water should be replenished frequently to keep the water fresh.

Misgurnus anguillicaudatus does not require high water quality, but the waters polluted by pesticides or with high concentration of chemicals cannot be used as aquaculture water. Misgurnus anguillicaudatus does not have high requirements for water quality, but it does not mean that there is no requirement. The overall requirements for water quality in loach ponds are "fat, lively, tender and cool", and the PH value of water is between 6.5 and 7.5.

After loach stocking, topdressing should be done in time according to the water quality, so as to keep the water quality at a certain degree of fatness and keep the water body lively and cool. In addition to sufficient water, it is also necessary to have corresponding water quality conditions, the most important of which are: containing appropriate amount of dissolved salt; Rich in dissolved oxygen, almost saturated; Contains proper amount of plant nutrients and organic substances; Does not contain toxic substances; The pH value is around 7.

The growth of loach is in direct proportion to dissolved oxygen in water. When the dissolved oxygen in the water is high, the loach eats vigorously and the oxygen consumption increases, which is beneficial to the growth of loach.

How much does it cost to raise loach? How much does it cost to raise ten acres of land?

Is it special cultivation in paddy field or mixed cultivation with planting? There are great differences between the two methods, such as different seedling density and seedling cost. At present, the seedlings are generally around 20 yuan, and 500 kilograms of seedlings are needed for special cultivation per mu, and the mixed seedlings are generally around 1/3. Seedling cost plus land rent and feed, pesticides and labor costs.

How deep should the surface of loach be?

Depending on how you breed, you can breed in cement ponds or rice fields. Method 1: Cement pond culture method This method is suitable for large transit bases. The site should be located in the leeward and sunny place, with sufficient water, fresh water quality and no pollution. The cement pool should have facilities such as sewage discharge and oxygenation to facilitate water intake and drainage. Cement ponds have different specifications, generally 8 m× 4 m× 1 m, and the water storage capacity is about 20 tons. In the form of running water, the temporary cultivation density is 40-50 kg per square meter. If a tank-type cement pond is built, a flowing tank with a cubic meter of water can temporarily raise 100 kg of loach. Misgurnus anguillicaudatus should be strictly selected before entering the cement pool, requiring strong physique, no disease and no injury, and lively swimming. The loach in the pond should have the same specifications, which can be put enough at one time or put with the harvest, but it must be soaked in 3% salt water for 3-5 minutes before being put. In addition, it should be noted that in summer, a sunshade should be built above the swimming pool to prevent sun exposure, and water should be changed twice a day; Change water once a day in autumn; Change the water every two days in winter. The amount of water exchanged each time is 65438+ 0/2 of the water body. During the temporary period, we should also feed the bait properly. Misgurnus anguillicaudatus has various feeding habits, and its natural feed includes small crustaceans, aquatic insects, snails, earthworms, animal viscera, soybeans, rice bran and so on. If the water is deep, it is generally about 50CM.

How much is a catty in loach seedlings! What are the conditions for reproduction?

General price in loach seedlings:1-2cm 400 yuan/10,000, 3-5cm 65438+ 10,000, 5cm or more 1.200 yuan/10,000.

Misgurnus anguillicaudatus belongs to Misgurnus. Misgurnus anguillicaudatus, known as "ginseng in water", is distributed all over southern China, but it is not common in the north, but it can also be seen everywhere. It can be harvested all year round, most in summer. After the loach is caught, it can be eaten raw or dried. Misgurnus anguillicaudatus lives in lakes and swamps. It is very small, only three or four inches long. It is round and short, with small scales under its skin, blue and black in color, and covered with its own mucus, which is too greasy to hold. It is a kind of fish with high nutritional value. It is different from other fish in appearance, shape and living habits. This is a special kind of loach. The body is slender and the front section is slightly cylindrical. The back side is flat, the abdomen is round, the head is small, the mouth is small, and the lower part is horseshoe-shaped. The eyes are small and there are no thorns under them. It must be five pairs. Scales are tiny and round and buried under the skin. The back and sides of the body are grayish black, and there are many small black spots all over the body. There are also many black spots on the head and fins. The spots on the dorsal fin and caudal fin membrane are arranged in rows, and there is an obvious black spot at the base of caudal stalk. Other fins are grayish white. Misgurnus anguillicaudatus is widely distributed in China, Japan, North Korea, Russia and India along the coast of Asia, and it can be eaten or used as medicine.

Breeding conditions

Misgurnus anguillicaudatus is a kind of fish that lays eggs repeatedly. Under natural conditions, it begins to breed in early April, and it is the peak of spawning from May to June, and it can still spawn in September. The aquaculture water temperature is 18-30℃, and the optimum water temperature is 22-28℃.

The sexual maturity of female loach is later than that of male loach. When the female loach grows to 5 cm, there are a pair of ovaries in the female loach. When the female loach grows to 8 cm, the two ovaries heal together to form 1 ovary, which extends from the front end to the back end. At this time, the whole ovary begins to mature.

The number of eggs conceived by female loach varies greatly according to individual size. The smallest mature individuals is 8 cm long, with about 2000 eggs, 7000- 10000 eggs 12 cm, 12000- 14000 eggs 15 cm. The maximum number of eggs can exceed 65,000. Oval, the egg diameter is about 0.8- 1.0 mm, it swells to 1.3- 1.5 mm after water absorption, and it is egg yellow, semi-viscous and weak in viscosity. Because the maturity of eggs in the ovary is different, the amount of ovulation each time is about 50%-60% of the number of pregnant eggs.

The minimum mature length of male loach is more than 6 cm, and its sexual maturity is earlier than that of female loach. Male loach has a pair of testicles, which are located on both sides of the abdominal cavity and are banded and asymmetrical. The testis on the right side is longer and narrower and lighter than that on the left. When the male loach is 9- 1 1 cm, there are about 1 100 million * * in the testis. Misgurnus anguillicaudatus lays eggs on a sunny morning after rain. Before spawning, the female loach swims in front. Several male loaches chased after them. * * *, male and female loaches mostly move around the water surface and fish nests. When * * * reaches * *, their heads and bodies rub against each other and swim out of the water. The male loach chases and pesters the female loach, curls up in the abdomen of the female loach to lay eggs with the female loach, and at the same time, the male loach excretes * * * for in vitro fertilization. This action varies with individual size, and the number of times is above 10. The fertilized egg first attaches to aquatic plants or other attachments, and with the fluctuation of water, it is easy to fall off from the attachments and sink to the bottom of the water.

What documents do I need to apply for breeding and selling loach?

1 Only need to apply for a breeding certificate.

2 sales business certificate

3. Business license

Breeding, what are the conditions for breeding?

Adult culture of loach is to raise overwintering fish from 5-6 cm in length to commercial fish with weight above10 g. There are two ways of loach culture: pond culture and paddy field culture. 1. Fish ponds should be cultivated in ponds with an area of 1.5-3.0 mu and a water depth of 50-60 cm. Disinfect the pond with quicklime before stocking, and apply 50 kilograms of organic fertilizer on the water surface of 100 square meter to cultivate plankton. Stocking 40-50 fish of 5-6 cm per square meter, and polyculture a small amount of bighead carp to control the excessive reproduction of plankton. Feeding began the next day after sowing, and the daily feeding amount was 5% of the total weight of fish. The feed includes rice bran, bean cake, silkworm chrysalis powder, peanut bran and granular feed, which is fed twice a day. In the future, with the growth of fish, it is necessary to deepen the pool water appropriately. You can set up a parasol by the pool when it is hot in summer. When loach frequently appears on the water surface for intestinal breathing, it shows that there is no oxygen in the water, so it is necessary to reduce the amount of fertilization and replenish fresh water, and it is best to set up an aerator. By the end of the year, loaches can be caught and sold when they grow to more than 10g per tail. 2. Paddy field culture It is a good idea to develop fish farming sideline in areas with small pond area, raise loach in paddy fields and implement rice and fish co-cultivation. When rice is harvested in autumn, the ridge must be tamped and reinforced. Dig a small puddle with an area of 4-6 square meters and a depth of 30-50 cm in the field. Drain the water in the paddy field before stocking, dry the paddy field for 3-4 days, put 50 kilograms of organic fertilizer per 100 square meter of paddy field, apply 20-25 kilograms of rice bran as base fertilizer, and then store water to breed bait organisms. Stocking 5-7.5kg of loach seedlings with 5-6cm per 100 square meter, putting rice bran, bean skin and silkworm chrysalis powder after seedling release, and putting them every 3-4 days 1 time. 1 month later, apply 50 kg of fertilizer. When each loach grows to about 10g in autumn, it can be caught and sold. Before harvesting, the water in the rice field should be drained, and the loach in the rice field will gather in a small puddle and catch it with a net. The loach that has reached the bottom of the mud should be carefully dug out with a small shovel. In the process of loach breeding, especially in the current high temperature and rainy season, it is necessary to strengthen feeding management in order to obtain higher survival rate and yield. During storms, fish are most likely to escape from thin pond foundations or ridges. Therefore, the pond foundation or ridge should be reinforced and tamped before stocking, and the inspection should be strengthened in rainy season. If cracks are found, they should be filled in time. Fences should be reinforced at entrances and exits to prevent fish from escaping. At the same time, after the rainstorm, it is necessary to drain the accumulated water in time. Three. Disease control The common diseases of loach are: 1, white body red circle disease: the diseased fins are white and red circles appear on the body surface. The pathogen has not yet been determined, and it may be caused by bacteria. Furazolidone can be mixed into feed for oral administration, and the dosage is per 100 kg fish weight 10-20g, and it is continuously fed for 5-7 days. 2. Water mold is a common disease in winter, and sick fish can be soaked in 4% salt solution 10 minute. For long-distance transportation, the mixed solution of 4ppm salt and 4ppm sodium bicarbonate can be used for long-term immersion bath. 3. Trichlorfon disease often occurs in loach breeding, which can be soaked in 0.5 ppm trichlorfon solution 10- 15 minutes. In summer and autumn, the phenomenon of anoxic floating head often occurs in ponds or rice fields with high stocking density. Patrol should be strengthened between midnight and early morning. When the fish's anoxic floating head begins, the water in the pond or paddy field should be replaced, most of the original pond water or paddy field water should be drained, and then fresh water with high oxygen content should be injected to supplement it. We should pay attention to eliminating the enemy's harm at ordinary times. The common enemies of loach are otters, tiger frogs, water snakes and various wild miscellaneous fish (raw fish). ). Before stocking, thoroughly clean the pond or paddy field with quicklime, and then stock loach seedlings after killing all kinds of enemies. After sowing, filter nets should be laid at the water inlet and outlet to prevent wild fish from drilling with the water flow. Plastic nets or corresponding tools should be used around the pond to prevent water snakes and otters from entering. Tiger frog often lays eggs on the pond surface in spring and summer, and its eggs are floating eggs. Catch frog eggs with a net every morning to prevent tadpoles from hatching and hurting loach seedlings. Misgurnus anguillicaudatus is a common wild fish, which belongs to CYPRINIDAE and Misgurnus in classification. Misgurnus anguillicaudatus is widely distributed in most areas south of Liaohe River in China, as well as Vietnam, South Korea and Japan. This kind of fish is found in all fresh water areas of our country, such as lakes, ponds, rivers, ditches, rice fields and so on. The loach meat is tender, fragrant and delicious, with high nutritional value, containing protein 18.43% and fat 2.69%. Misgurnus anguillicaudatus is also a kind of medicinal fish, which is sweet in taste, flat in nature, warming the middle warmer, invigorating qi, nourishing yin and strengthening yang, quenching thirst and diuresis, and is mainly used to treat skin acne, edema, jaundice and hemorrhoids. Therefore, loach has a good market and high price, and it is also one of the exported aquatic products. Simply capturing natural resources can no longer meet the market supply and carry out artificial breeding. ......