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The pond carp is scientifically known as the beard carp. The popular name is Tongjiao fish. Since the fish species were introduced from Egypt, it is called "Egyptian pond carp." It is larger than the pond carp in China. The meat is tender and nutritious, and it is a good product that is widely available. First, fry breeding To breed Egyptian pond fry, first of all to choose good and strong broodstock, according to the fish weight of 5% to 10%, with peanut bran, silkworm cocoons and other food feeding, to promote gonads hair well. Good female species have a more sticky surface, lighter pigments, slightly higher head, abdomen bulging, blunt end of pectoral fins, round genital hole, abdomen and ovaries at the time of maturity. Obvious and elastic, sometimes can be pressed out of aquamarine Eggs; anal slightly reddish. The male species has a rougher surface, darker pigmentation, a slightly flat head, a straight body, a narrow and long belly, a long sharp end of the pectoral fin, a slender tubular outer genitalia, and a pointed end with a slightly concave anus. After selecting mature broodstock, oxytocin injection can be performed. The oxytocic agent can be used as fish pituitary gland or human chorionic gonadotropin, 4 pituitary glands per kg of female fish, or 14-16 pituitary glands, or 3000 units of hormones. Reduce the use of males by half. The pituitary gland should be crushed, and normal saline should be added to make the injection. The hormone can be dissolved with normal saline. Kilogram body weight of broodstock, injection volume is 2 ml. The injection site is the dorsal fin muscle, or the inner side of the pectoral fin base. After the injection, the male and female broodstock is paired in the clear water in a plastic basin, and some fake narcissus roots can be placed as a fish nest, and then covered with bamboo foil and placed in a secluded place to keep the water temperature at 25°C-30°C. The brooding fish will be spawned for about 10-12 hours from the time of injection and spawning time will be about 3 hours. A fish can be kept well. It can lay eggs 4- to 5 times a year, and can spawn 3 to 40 thousand eggs at a time. After the broodstock spawns, the eggs are collected and placed in an incubator or cement tank, water tank, basin, and other equipment for hatching. Per square meter of water can accommodate eggs 2 - 3 million, the pool water to maintain a depth of 30 --- 40 cm, the temperature maintained at 29 °C -30 °C, not too high, do not let strong sunlight. If you use pots, cylinders hatch, pay attention to changing the water frequently. Incubation takes only about 2 hours from fertilization to filming. When the larvae come out of the membrane, the fish nests should be cleared in time and the water should be changed. After 50-60 hours, the fish can put the fish into the bait-feeding pond after swimming. Fry cultivation is best done with concrete pools that are easy to manage, easy to capture, and can prevent threats from predators. Cement pool can be built into a square, generally 10 - 20 square meters is appropriate, the pool is 2 meters high, the pool side of the drainage and irrigation pipe and sewage pipe, stocking density of 1500 - 2000 per square meter water surface is appropriate. In the case of ample feed, it is usually cultivated for about 15 days and can reach the sale specifications. In the breeding stage, bait is best served by zooplankton (water creep). The waters should be filtered to prevent predators such as dragon larvae and pine-eat algae, and mixed feeds such as egg yolk, milk powder and corn flour can also be used. However, it is necessary to pay attention to pool water and keep it fresh so as not to pollute the water quality and affect the growth of fish. You can also use the pond to raise fry. In a large number of breeding, the use of ponds is better, the pond area of ​​1- 2 acres, the water depth of 1-1.5 meters is appropriate. The pond needs to be leveled and the irrigation and drainage are convenient. In the first 10 days before the fish is under the pond, it is best to use 40-50 kg of tea bran to kill the pond and kill the bacteria in the pond for disinfection. Then wash the pond with water and put it back in the clear water before putting the fry. There are 200,000 tails per acre and the bait is the same as the pond. Always visit the pond, observe the changes in the water, remove the frog eggs and other debris, and prevent the natural enemy of the fly. In this way, breeding for 12-15 days, the fry up to 2--3 cm can be sold. Second, adult fish breeding Egypt pond fish growth is most suitable for 20 °C -30 °C temperature, so every year in April - November is the ideal breeding season, this time can raise 2 - 3 groups of fish. At present, there are four kinds of common farming methods. Paddy field farming: Paddy fields require no loopholes, drainage and irrigation are convenient, and the field base is relatively high. In the water inlet and outlet, net yarn or bamboo sieve should be installed to prevent the fish from escaping. You can dig a small pool of 1--2 square meters in the four corners of each field. The depth of the pool is about 1 meter. The surface of the pond should be covered with leaves or thatch to avoid strong sunlight exposure. Each acre of rice fields can be placed around 1,000 fish fry, and a certain amount of food can be put into the pool regularly every day. Such as good management, per mu fish can get 75-175 kg. Family Pooling: Family farms can use earthen ponds, concrete pools, patios, puddles, water tanks and other places for aquaculture. The stocking density is about 50 fish per square meter of water. This kind of pond has high requirements for fish feed, and it is best to use animal feeds such as cockroach, cockroach, and miscellaneous fish. Can also be mixed under the fish meal peanut bran, wheat flour, corn flour and other feeding. Usually 1 or 2 times a day. At the same time, always change the pool water and try to keep the water fresh. Pure pond cultivation: The pond is 0.5-2 acres and the depth is 1- 2 meters. Before disinfecting the fish, clearing ponds must be disinfected, and the density should be 3000--4000 per acre (preferably 5 cm in size). The livestock manure can be applied. The feed can be used for peanut bran, rice bran, silkworm cocoon and so on. The daily management should regularly, qualitatively, quantitatively, and positionally feed every morning and evening, 40% in the morning and 60% in the evening. Adjust the amount of feeding once a week, about 20% increase. After the fish is released, the first 20 days should be more concentrated feed. The amount of fish is about 10%-15% of the body weight of the fish. It is necessary for the fish to grow and grow quickly. Attention should be paid to changes in water quality. Fertilization. In rainy days, it is necessary to do a good job of anti-escape work. The ponds are cultured for two or three months, and the average fish can reach 0.4--0.5 kg. Mixed fish rearing: Egyptian pond fish can be mixed with the four home fish, can make full use of water, but also conducive to the growth of the four major fish: stocking time is best in July-August, the number of stocking depends on the bait, generally Per mu of polyculture fish ponds were put into the 1000-2000 tail of the fish pond. The bait is full and well managed. In addition to increasing the production of fish, 300-1000 kg of Egyptian pond catfish can be collected per mu. Third, prevention and treatment of fish disease should be cultured in good pond fish in Egypt, but also pay attention to prevention and treatment of fish diseases. The common fish diseases are the following: Bubble disease: The seedling stage is easy to get the bubble disease. There is a large bubble in the abdomen of the diseased fish. The fish body floats on the water surface and cannot sink, causing serious death. Prevention methods: Note that substitutions of fresh water, should not allow strong light into the pool, and to meet the supply of food, otherwise the fish swallowed bubbles easily cause the disease to occur. Enteritis: Caused by inconstant and sudden changes in bait feed. Diseased fish intestine congestion and inflammation, body cavity filled with yellow water, abdominal swelling, fish body black. Control measures: In addition to timing, quantitative feed, but also regular bleaching powder, 1 gram per cubic meter of water body for disinfection, but also in every hundred kilograms of feed infiltration of 34 grams of furazolidone feeding. The third generation of worms: the diseased fish body became dark and curled, gradually became thin and died. Control measures: 90% crystal trichlorfon 0.5 g Quanchiposa per cubic meter of water. Black body disease: easy to get black body disease at the fry stage, the sick fish is thin, body color is black, and the back has white villi. The disease has become anxious and infectious, and can cause massive deaths. Control methods: One cubic gram of bleaching powder per cubic meter of water can be used. Quanchiposa, change the new water after medication, and then apply again once to keep the water in the pool fresh. Try to reduce the amount of food that can easily pollute the water. Trichodiasis: This disease is caused by the parasitic body of the trichomonad. The diseased fish lost weight and stopped feeding. The fish body became dark and swarmed around the pool and soon died. Prevention measures: 0.5 grams of copper sulfate per cubic meter of water, 0.2 grams of ferrous sulfate Quanchiposa. Or soak the fish with 2% salt solution for 15 minutes.