1, fish pond conditions Generally,1~ 2 mu is suitable for the pond area dedicated to snakehead culture, with a maximum of 3 mu. The water depth is1~1.5m, and the bottom of the pond is preferably muddy. The water source is sufficient, and the water quality should be neutral or weakly alkaline. Thorough pond cleaning and disinfection should be carried out before stocking mullet fry10 ~15 days. The methods can be divided into dry pond cleaning and pond cleaning with water, and the commonly used medicine is quicklime. Dry pond cleaning and disinfection, generally 50 ~ 75 kg of quicklime per mu; Clean the pond with water for disinfection, and the water depth 1 m is per mu125 ~150kg. There should be a water surface of about 1/5 in the pond, or the water surface around the pond should be used to plant water hyacinth with a width of 80 ~100 cm, so as to shield the sun when the water temperature is high in summer, which is not only beneficial to the summer and hiding of mullet, but also to purify the water quality and the growth of mullet. 2. Generally, 6,000 ~ 8,000 healthy fish can be released per mu for fish stocking. The fry should be uniform in size and specifications, strong in physique, complete in scales, lively and normal in swimming, and free from damage. 3, feeding technology mullet is a carnivorous fish, and the bait should be mainly small miscellaneous fish. In the early stage of culture, because the fry size of mullet is small, the wild miscellaneous fish with large size should be chopped and fed to improve palatability. The daily feeding amount is generally about 5% of the total weight of fish, and it is adjusted according to the feeding situation. Generally, the feed-to-weight ratio is about 1∶4. Feeding should be timed, positioned, qualitative and quantitative. Feed it once a day in the morning and afternoon, and feed it again in the evening when the food intake is strong. When feeding, put the small miscellaneous fish on the food table hanging in the pool water, so that the fish can eat freely to reduce the waste of bait. 4. Daily management (1) Patrol the pond every morning and evening 1 time, carefully observe the feeding and activities of fish species, pay attention to the changes of water quality, and handle problems in time when found. (2) Pay attention to adding fresh water frequently when changing water to keep the water fresh, so as to promote the normal growth of mullet. (3) At the initial stage of stocking, the size of mullet seedlings was still small, and their jumping ability was poor. When the body length exceeded 10 cm, the jumping ability gradually increased, especially in thunderstorm weather, changing water and early morning, when jumping was very active, fish escaped easily. Generally, the height of the pool ridge from the water surface should be more than 50 cm to prevent escape. (4) At1~ 2 months in the early stage of separate feeding, snakehead with particularly fast growth and large individuals should be fished up with nets in time and cultured in another pond, so as to make the fry in the same pond have the same size and specifications as far as possible, so as to prevent large individuals from eating small individuals. (5) Disease-preventing mullet has strong disease resistance and seldom gets sick, but in the case of high-density culture, if we don't pay attention to improving the culture technology and management level, diseases will also occur. Mainly hemorrhagic disease, symptoms: the food intake is obviously reduced, and the diseased fish show massive or punctate bleeding. If it is not treated in time, it will die in 3 ~ 5 days. The treatment can be combined with oral administration and external use of drugs. The oral administration is fed with 80 grams of Yuxuekang II per 100 kg of fish weight, once a day 1 time, for 2 ~ 3 times; Or use fish Funing every 100 kg of fish weight, take 30 grams of medicine every day, mix and feed, every day 1 time, for 3 days. For external use, fish and shrimp dichlorvos can be used, with the dosage of 250g per mu or 200g of strong chlorine essence, which is sprinkled all over the pond, once a day 1 time, and three days is a course of treatment, with good effect. At ordinary times, quicklime should be used regularly in the pond to prevent the whole pond from splashing and disinfecting, so as to ensure the normal growth of mullet and improve the yield and benefit.