The body size of red dragonfly is similar to that of the high-type heterotrophic silver crucian carp, and the growth rate is fast. The high-backed quail feeds faster than the polyculture in the same pool, effectively increasing feed utilization. Strong disease resistance, no disease was found in breeding in the past two years. The body is bright red, bright color, fresh meat, with dual economic value of food and ornamental. First, the fry cultivation techniques 1. Fry pool cleaning and disinfection: In late March, do a good job in the preparation of fry pool, fry pool with an area of ​​1 to 5 acres, water depth of 0.8 to 1.5 meters, east-west rectangular as well. Remove weeds from the pond, remove excess silt at the bottom of the pond, and disinfect the fish seedlings pool with quicklime. 2. Water Injection Fertilizer water quality: After 3 days of sterilization in the cultivation pond, add new water to a depth of 0.5 m, and install a filter when adding water. Fertilizer water quality, Mushi fermented manure 300 kg. 3. Fish fry time: Select the sunny day at around 10:00 am, put the seedlings in the pool with less silt and harder sediment. The fry stocking density is 200,000 per mu. 4. Rearing and management of fry: The fry is divided into upper and lower parts of the pond and fed with yellow soybean milk every day in the afternoon. The whole pond is splashed with water, and 5-6 kilograms of dried soybeans are fed every day. The fry grows faster every day during the culturing period. It is necessary to continuously add new water to increase the volume of water and dissolved oxygen. When red snapper seedlings are cultivated for more than 20 days and the body length reaches 5 to 8 cm, they can be divided into pools for feeding. 5. Breeding and management of fish species: 5000 a.m. per acre stocking summer flowers, 200 white alums and 1000 fishes. In the middle of July, the red puffer fish species gradually increased in color, and they basically appeared red at the end of July. The management of red snapper species is basically the same as that of high-backed salmon species. Second, adult fish breeding technology 1. Pond conditions: an area of ​​5 to 20 acres, depth of 1.5 to 2.5 meters, irrigation and drainage facilities, convenient transportation, adequate power supply. 2. Time and density of seeding: After the winter ponds are cleaned every year, fingerlings will be released. Polyculture mode: Acre weight of about 50 grams red tail 300, high back (or other excellent fish) 600, Wuchang 50 fish. The main mode of raising: 50 mu of tail weight is about 800 red tails, 200 tails high and 50 tails of Wuchang fish. When sowing, soak it with 3% saline for 5 to 10 minutes. 3. Feeding and management: The red snapper has a low food intake in winter and should be fed with peanut bran cake. In early spring, as the water temperature increased, it began to feed the mixture, but also feed pelleted food containing 32% of crude protein, with a particle size of 2 mm, and the daily amount was fed at a body weight of 2%. In June, the consumption of red clams increased, especially during the period from the end of June to the end of September. The amount of daily food was 5% to 8% of body weight. Wuchang fish is dominated by green feed, supplemented by concentrates, and the green feed is fed every morning. In October, the fish tail weights of Hung Hom, Gaobeishan and Wuchang all reached 400-500 grams. At this time, they should be marketed in a balanced manner. During the growing season, new water is regularly added to regulate water quality. The aerator is turned on for 1 to 3 hours every day at dawn and at noon on sunny days. Every half a month, quicklime is delivered 1 time, 40 kilograms per mu, and Quanhua Quanchiposa to prevent fish disease.
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