Current location - Recipe Complete Network - Dinner recipes - What does mandarin fish eat?
What does mandarin fish eat?

Osmanthus fish generally eats live bait\x0d\\x0d\ Seed cultivation\x0d\\x0d\ According to the feeding characteristics of sweet-scented osmanthus fry that devour the fry, the fry should be cultivated in cement ponds and ring roads or in a cage. The cement pool should have an area of ??10-20 square meters and a water depth of 1.1-1.3 meters. The fish pond should have inlet and drainage equipment and micro-flowing water to keep the water fresh so that the mandarin fish can swallow the fry. It should also be equipped with a supporting domestic fish fry breeding tank. To ensure adequate supply of live bait. The stocking density of fry is: 3000-4000 fish/cubic meter in cement ponds and ring ponds, and 2000-3000 fish/cubic meter in cages. When the fry grow to 1.5-2 cm, the density should be reduced by half and cultivated in thin sections. Within a week after the fry are released into the pond, the newly hatched fish flowers should be fed, and then gradually feed the fry that are 2-3 sieves smaller than the sweet-scented osmanthus fish to facilitate the feeding of the sweet-scented osmanthus fish. If there is sufficient food, the fry can grow to a size of 3 cm after 10-15 days of cultivation, with a survival rate of about 60%. At this time, it can be put into the adult fish pond for adult fish breeding. \x0d\\x0d\ Adult fish culture\x0d\\x0d\ (1) Pond main culture\x0d\\x0d\ The pond area is 1-3 acres and the water depth is 1.5-2.0 meters; it requires convenient drainage and irrigation, and fresh water quality. There is micro-flow water and an aerator, and the bottom of the pool is preferably a sand bottom or a sandy mud bottom. Before stocking fish fingerlings, the pond should be cleaned and stocked with 1,000-1,500 mandarin fish summer flowers per acre. At the same time, 500-1,000 silver carp and bighead carp species are mixed, or silver carp and bighead carp broodstock are mixed to adjust the water quality. During the breeding period, wild fish should be fed reasonably according to the fish stock, and high-end fish should be raised with low-grade fish. Or after cleaning the pond, first apply basal fertilizer to cultivate the water quality, and then put in 800,000 to 1 million dace flowers per acre. Half a month later, when the dace flowers grow to 4-5 o'clock, half of the original pond water will be drained. Add new water and add 700-900 mandarin fish (about 0.5 grams) per acre. Alternatively, the sweet-scented osmanthus fish can be cultured first, and 5,000 sweet-scented osmanthus fry can be stocked per acre. After more than 40 days of cultivation, when the total length reaches 12 centimeters and the weight is about 50 grams, they can then be raised in separate ponds and stocked with 500-700 fry per acre. This can speed up the growth rate of mandarin fish and improve the survival rate. If there is sufficient bait, it will take about 180-200 days to grow from a summer flower to an adult fish weighing more than 400 grams. Each acre can produce 100-150 kilograms of adult fish. \x0d\\x0d\ During the feeding period, the following management tasks must be done. \x0d\\x0d\ 1. Raising good bait fish Since sweet-scented osmanthus fish only eats live bait, this is the key to raising good sweet-scented osmanthus fish. The main ways to solve the problem of live bait are: ① Before the summer flowers of sweet-scented osmanthus go to the pond, first cultivate the fry of four major species in the pond; ② While stocking the sweet-scented osmanthus fry, put in about 50 grams of crucian carp or 20-30 grams of __ fish, let them reproduce on their own in the sweet-scented osmanthus fish pond, and provide palatable live bait for the sweet-scented osmanthus fish; ③ Simultaneously cultivate live bait. Generally required to raise sweet-scented osmanthus fish, 3 acres of bait fish ponds should be equipped to cultivate bream, dace, silver carp, bighead carp and other fry to ensure daily supply; ④ Collect live bait from other water bodies and put it into the sweet-scented osmanthus fish breeding pond. \x0d\\x0d\ 2. For bait fish, choose fish that are slender, without hard spines, and easy to swallow, such as bream, dace, silver carp, bighead carp, etc. \x0d\\x0d\ 3. The size of the bait fish should be based on the growth of the sweet-scented osmanthus fish, from small to large, and gradually increase in size. Generally, it should be 3-5 sieves smaller than the sweet-scented osmanthus fish. \x0d\\x0d\ 4. Master the feeding amount of bait fish well. In the first month after stocking the mandarin fish, you can feed it at 70% of the total weight of the mandarin fish, once every 5-7 days; in the second month, feed it at 30-50% of the total weight. Feed once every 3-5 days; after the third month, feed 10% of the total body weight every day. In short, we must ensure that the sweet-scented osmanthus fish is full and well-fed. Generally, from 7-day (3cm) fry to commercial fish weighing more than 400g, about 2.2-2.5kg of bait fish is needed, and the breeding time is about 200 days.

\x0d\\x0d\ 5. Adjusting water quality Osmanthus fish has high requirements for water quality. During the breeding period, the transparency of the pool water should be kept at about 40 cm, and the pH value should be controlled above 7.8. The water should be changed and filled in time, especially in the late growth period from September to October. Drain and irrigate water every two days, changing about 1/3 of the water each time; at the same time, the aerator should be started at a timely manner to promote the growth of mandarin fish. \x0d\\x0d\  (2) Mixed breeding\x0d\\x0d\ 1. Domestic fish broodstock ponds can be stocked with 30-50 3cm mandarin fish summer fingerlings per acre. It mainly uses wild fish in the broodstock pond as bait. It is generally raised for 4-5 months and can grow to about 300 grams of commercial fish, which can be put on the market that year. Each acre can produce 5-7.5 kilograms of sweet-scented osmanthus fish. \x0d\\x0d\ 2. Polyculture in adult fish ponds In adult fish ponds where there are many wild fish, 30-40 mandarin fish summer flowers can be put in per acre. But there are a few points to note: ① The water quality in the adult fish pond should not be too fat; ② The stocking time of mandarin fish should be three or four months longer than that of domestic fish; ③ The stocking time of domestic fish, summer croaker or other species should not be stocked in the adult fish pond. Carnivorous meat; ④ Since mandarin fish is relatively sensitive to drugs, when applying fish disease drugs in ponds, the drug concentration should be accurately calculated. In the high temperature seasons of summer and autumn, use low doses or stop using drugs; ⑤ Turn on the machine at the right time to increase oxygen, and drain and irrigate the pond water regularly; ⑥ When the pond is dry at the end of the year, you can use the method of filling the river to attract seedlings and introduce wild fish for the sweet-scented osmanthus fish to feed on. A certain number of tilapia can also be raised in adult fish ponds to breed fry for the mandarin fish to eat. \x0d\\x0d\ Fish Disease Prevention and Control \x0d\\x0d\ During the seed cultivation period, sweet-scented osmanthus is susceptible to diseases such as saprolegnia, gill rot, trichozoa, anchorhead slug, and obliquus. If not treated in time, it will easily Caused large numbers of deaths. It can be prevented and treated according to conventional methods.