I. Timely clear pond After 2-3 months of cultivation of fish ponds, water quality has generally been aging, natural foods have been reduced, and harmful gases such as hydrogen sulfide and pathogenic bacteria have increased. After the fall, the fish should be transferred to ponds that have been sterilized in the clear ponds. Where water and fish ponds are difficult to turn around, all the fish species can be transferred out of stocking, and the original pond can be disinfected with 75-100 kg of lime per acre and the water quality can be fertilized according to conventional methods. The fish species is turned back to ensure the purification of the living environment. Second, split management Fish species should be properly reared according to different specifications, so that the specifications for the fish species returned to the pool are the same. Because large-scale fish species have large food intake and strong grab power, if small-scale fish species are stocked at the same time, the fish will not receive enough food and their physical quality will decline. Fishes over 16 cm in size can be placed in adult fish ponds. Smaller fish species need special pools for cultivation, so as not to cause food shortages, and stronger and weaker weaker extremes occur. Third, regular tour pool During the cultivation of the fingerlings, it is necessary to insist on daily observation of the fish’s food intake and growth status, pay attention to changes in water quality, change new water frequently, and add new water once a week. And often clean the food market, remove the residue leftover bait in time, half a week in the food market with bleaching powder spilled 0.5 kilograms of water, regular feeding baits, preferably twice a month, each feeding 3 consecutive days, found sick fish , Dead fish should be removed in a timely manner, and at the same time diagnosed and given drug control. Fourth, reasonable and rare The cultivation of large-scale fish species in the autumn is an important part of raising the survival rate of winter fish species. It should be based on the size of the water, the depth of the water body and other conditions, a pond that is 1.5m deep and has a water depth of 1.5 meters, and stocks 7-8 cm long fish per acre. This kind of 4000-6000 tail, up to the end of the year up to 13-17 cm body length. Pacific Mackerel,pacific jack mackerel,pacific chub mackerel,pacific spanish mackerel,pacific mackerel fish Zhoushan Boda Aquatic Products Co.,Ltd , https://www.baida-aquatic.com