Guillow fish sexual maturity is early, in the south of China, generally male fish can mature at 1 winter age, female fish for the age of 2. They can spawn naturally in rivers, lakes and reservoirs, and can spawn many times a year. In the Yangtze River Basin, the spawning season is generally from May to July. Sexual maturity is early, 2 age sexual maturity, sexual maturity of the smallest individual 210 millimeters, weighing 250 grams. It is a batch spawning fish and can repeat spawning many times in its life. The spawning period is from May to August, and a few can extend to August. Eggs are mostly spawned at night, and are floating, orbicular, orange-yellow, with oil globules. The diameter of the egg is 1.2 to 1.4 millimeters, and after fertilization the egg abdomen expands and the diameter of the egg is about 2 millimeters. The amount of eggs is generally between 2.7 and 213,000 grains, the number of eggs and the size of the fish body into the lower ratio, the water temperature of 21 to 24 ℃ after 72 hours to hatch, the first hatchlings are 4.2 to 4.4 millimeters long. The first hatchlings are 4.2 to 4.4 millimeters long. Their eggs are semi-driftable and can float with the current to complete hatching. Siniperca chuatsi grows fast, and its maximum individual weight can reach 10 kg. However, the 0.5-1kg size is the best-selling in the market.

Chiniperca chuatsi spawning like running water, artificial breeding first choose 1 ~ 2 kg of healthy and disease-free parent fish special pool rearing, feeding wild fish or commercial feed, can be artificially catalyzed, injection of carp pituitary or HCG, LRH - A and other hormones, let the natural ovulation. Siniperca chuatsi eggs are slightly viscous, with a specific gravity greater than that of water, and are easy to sink to the bottom. Incubation in the ring channel should increase the flow rate, which should not be less than 0.2 meters per second. Fertilized eggs can hatch into fry after 3 to 4 days. A larger number of fry can be obtained by artificial insemination. Natural fry can also be fished for breeding. Fry cultivation is suitable for cement pools with an area of several dozen square meters. The water quality should be fresh and have a slight current. In addition, there should be a small forage fish fry cultivation pool (other fish whose breeding period is basically synchronized with that of Mandarin fish) to ensure the supply of live feed. Siniperca chuatsi is a weak predator and will eat each other when there is a lack of feed, thus affecting the survival rate. With sufficient feed, fry can be reared to about 3 cm of summer flower species after 10 to 15 days of rearing. At this time can be transferred to adult fish breeding.

Culture method

Mixed culture is mixed culture in the adult fish pond, and the second is set culture in the parent fish pond. Generally around May stocking 3 cm or so of Mandarin fish species, wild fish more adult fish ponds put 20 to 40 (the minimum size of the released domestic fish should be 1 times larger than the Mandarin fish), fish ponds mu put 30 to 50; stocking tilapia, crucian carp more adult fish ponds can be more, 50 to 70 per mu; tilapia overpopulation of ponds, per mu put about 100 tilapia. Ponds mixed with Mandarin fish should not be stocked with silver carp, bighead carp and other summer flowers, because Mandarin fish grow fast and will devour small-size domestic fish species. Since Mandarin fish consume more oxygen than domestic fish, the water quality of ponds for mixed culture of Mandarin fish should not be over-fertilized and new water should be injected regularly. Siniperca chuatsi is sensitive to drugs, so when applying drugs, the concentration should be accurate, and low dosage should be used or stop using drugs during the season of high water temperature. Adult fish ponds set breeding Mandarin fish, mainly using the natural wild fish in the pond as feed, can also set breeding part of the tilapia parent fish breeding fry for food. Conditional ponds near rivers and lakes can be filled with river nursery, and wild fish can be introduced for food. Mandarin fish feeding 4 to 5 months, can grow to about 300 grams of commercial specifications, per mu can produce Mandarin fish 5 to 8 kg. Monoculture is a specialized pond. Pond area of about 1 mu, water depth of 1.5 to 2 meters, water quality requirements of fresh, water to maintain a slight flow. About 1,000 Mandarin fish of about 3cm in size are put in the pond, and according to the fish stock, tilapia, mackerel, shrimps and other wild fish, or minced meat of snails and mussels are reasonably put in the pond for Mandarin fish to consume. The feeding rate is 3% to 5% of the total weight of the pond cultured Mandarin fish