What should we pay attention to when catching pond fish in autumn?

First, pay attention to the weather. In autumn, the fishing must be carried out before and after the dawn of sunny days, cool climate and non-floating head of the pond fish, which has the least impact on the fish in the pond and can supply the fresh fish caught in the morning market in time. Haze, muggy weather is not suitable for net fishing, so as not to cause a large number of dead fish. In addition, it is not suitable to catch fish in ponds when they have floating heads or fish diseases.

Second, feed should be restricted before arrest. After the fish is full, the oxygen consumption increases, and it will jump and flee when pulling the net, which is easy to cause casualties. Therefore, stop feeding or reduce the amount of feed one day before fishing, and do not feed a large amount of concentrate in order to increase the weight of fresh fish on the market, otherwise the loss will outweigh the gain. In addition, the residual bait and debris floating on the surface of the pond should be removed one or two days before the catch.

Third, it is necessary to master the method of pulling and catching. For the ponds with large area and dense fish storage, it is not suitable to catch the whole pond, but to catch half of the pond or 1 pound 3. Because the water temperature is high, the activity of pond fish is strong, oxygen consumption is large, and can not bear density, when there are too many fish in purse seine, it is most likely to cause injury and death of fish. When fishing with a net, you should be quick and careful to reduce the noise as much as possible to reduce the alarm to the fish in the pond. After encircling the fish, you should first quickly and briskly return the small fish in the net that have not yet reached the commodity specifications to the original pond, and then pick up the large fish on the market, so as to prevent the small fish from being squeezed, injured or suffocated to death.

Fourth, it is necessary to strengthen post-arrest management. In the pond after fishing, the activity of storing fish is intensified, the oxygen consumption is increased, and the sludge residue at the bottom is stirred in the process of fishing, and the organic matter at the bottom is turned up, which speeds up the rate of oxidation and decomposition, and greatly increases the consumption of water-soluble oxygen. so that the dissolved oxygen in the pond water decreases rapidly, which is easy to cause anoxic floating head of fish in the pond. Therefore, it is necessary to inject new water or turn on the aerator to increase oxygen in time after pulling and catching. At the same time, the whole pool should be sprinkled with raw lime paste for sterilization and disinfection in order to improve and regulate the water quality.