Euphorbia is usually cultured in ponds, but it can also be used for polyculture and cage culture. Pond conditions should be selected close to the source of water, a well-watered fish pond, with aerator in the pool. Fish pond area of ​​2-30 acres, depth of 1.2-2.5 meters, the bottom flat, about 15 days before stocking, pond cleaning and disinfection, with the calcification of slurry into the whole Quanchiposa, 100 kg per mu. Mainly kill potential pathogens and other predators. 2. Seedling stocking seedlings There are two kinds of stocking densities in Datang: the extensive raising of 500-600 pieces of winter fish with a stock of 6-l0cm per acre, which can reach a yield of 200 kg/mu; intensive stock raising is generally 1000-1200 per acre. At the end, production of 350-400 kg/mu can be achieved. When stocking, it can be used together with a certain amount of fish bones to snatch the fierce bottom fish, which can not only improve the water quality, but also increase the yield and benefit. 3. Feeding technology bait can be divided into three kinds, one is a live bait, the required live bait specifications for feeding 1/5 of the fish body, such as corn ear, white peony, flower pods and so on. The other type is chilled fishing lures, which are fed with chilled fish 7-10 centimeters a day, several times a day; more than 10 centimeters are fed chopped chilled fish, usually twice a day. The last is buoyant feed. Under normal circumstances, the artificial feed for artificial breeding Aphrodisiac feed has a feed coefficient of 1.5-2, and the live feed for chilled feed has a feed coefficient of 5-7. 4. The aquaculture management mainly includes the control of weather conditions, water quality, fish movements, and growth. It should be aware and accurate. The water transparency of the pool is kept at 25-50 cm. Neutral alkali is suitable for pH. Alice is a meaty and fierce fish. During the breeding process, it is necessary to ensure that there is sufficient food in the pool. In the summer hot season, attention should be paid to the replacement of fresh water to keep the water quality tender and refreshing. Usually, the water is changed once a week. The water exchange volume is 20-30% of the total pond water volume. 5. After one year's breeding of the harvesting results, 70%-80% of the outlet pond size can reach 0.4 kg or more, and the maximum size can reach 1.0 kg. The survival rate is about 80%, and the aquaculture output can reach 350 kg/mu. 6. The incidence of disease prevention and control of red mouth is very low. Only two diseases have been found. At present, there are better prevention and treatment methods. Saprophytic disease is mainly controlled by methods such as malachite green, methylene blue and salt water. The small melon worm disease can cause a large number of fish to die, and the provincial freshwater has developed a new drug called chlorpromazine 2, which can completely control the death of fish within 3-4 days.
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