How to catch and clean fish and insects?

When fishing for fish and insects in the early morning, we usually use worm nets on the edge of the Feishui river ditch and under the water surface of the pond, and generally can catch N. o. When fishing, the draught of the worm net should not be too deep, and the action should be brisk and agile. If the action is too fierce, it is easy to float the dirt and disperse the fish and insect groups. At the same time, observe the color of the water, the direction of the wind and the direction of the current. Generally, in the downwind and downstream shelter, there are more fish and insects, while the water is seriously polluted, the water color is turbid or black, and there are fewer fish and insects. In late autumn and winter, due to the decrease in the number of fish and insects, it is very rare in many rivers to form dormant eggs or dive into deep water to survive the winter. At this time, fishing for fish and insects is mainly from sewage pits and ponds. But at this time, fish and insects do not float on the surface as they do in summer, so long net pockets must be used to go deep into the middle and lower layers of the pits and catch them back and forth along a circular or spiral route. It is worth noting that it is best not to fish in intensive fish ponds. Because artificial intensive fish ponds often contain a large number of fish pathogenic bacteria, fishworms go back to feed ornamental fish, often bring pathogenic bacteria into the culture water, resulting in infectious diseases.

For caught fish and insects, it is best not to stay in the net bag for a long time, the number should not be too much, in order to prevent the bottom fish and insects from suffocating from hypoxia. Whether it is Cladocera or copepod, it should be cleaned before feeding the fish, so as to avoid introducing enemy organisms and disease-causing bacteria into the culture water and polluting the water body. The method of cleaning is to immediately pour the fish and insects into a large fish tank filled with clear water, then use a large net bag to fish the fish and insects into another fish tank with clear water, so repeatedly for 3 or 4 times. only when all the muddy water mixed with fish and insects has been cleaned and the color of fish and insects has changed from purple sauce to bright red before they can be used to feed ornamental fish. In the course of operation, when fish and insects are fished from one basin to another, the density of fish and insects is too high at the beginning, and large net cloth pockets are applied, and then the number of fish and insects is gradually reduced and cleaned, which can be operated with small net cloth pockets. When filtering and cleaning fish and insects, we should pay attention to the separation of live and dead fish and insects, that is, pay attention to the stratification of dead and live fish and insects when cleaning, because most live fish and insects have strong planktonic ability, they float and cluster on the surface of the water, while dead fish and insects are deposited at the bottom of the tank. When cleaning fish and insects for the first time, the two should be separated and cleaned separately. Newly dead fish and insects have not yet deteriorated, so they can be used to feed general species of ornamental fish.