For example, in deep water fields, winter paddy fields, wide border fields and back border fields, if fish farming is to continue after rice harvesting, the ears of rice should be harvested first, and some rice stalks should be left to fertilize the water for fish farming. Generally speaking, fish farming in rice fields requires fishing first, and after the mud bottom of rice fields is properly dried and hardened, rice is harvested with a harvester. This kind of fishing is relatively flat in the rice field, and the fish in the field can enter the ditch smoothly with the drainage, which is convenient for fishing; Otherwise, some fish or a small number of fish stranded in the field will cause losses. Therefore, when fishing, it is necessary to properly check whether there are any fish residues in the fields and ditches. If there are, you can catch them manually. Collecting fish and cutting rice before fishing, or collecting fish and cutting rice at the same time, is more intuitive and thorough. In order to salvage effectively, quickly and safely, certain tools and equipment are needed. Including sea fishing, netting or small nets, fish barrels, fish cages, etc. These fishing tools and simple equipment can be made by themselves (refer to the answers to questions about fishing tools in this book), or they can be replaced by general equipment. Before fishing, dredge the fish ditch and fish trough to make the ditch and fish trough unobstructed, then slowly release water to make the fish fall into the ditch and drive them to the fish trough appropriately, then fish gently with a small net, copy the net or fish in the sea, concentrate them in fish barrels, and then transport them to cages in nearby ponds and rivers for temporary cultivation. If there are many fish, it is difficult to catch them all at once. You can catch them again in the water and drain them. After that, it is necessary to check whether there is a small amount of fish left in the ditch, chute and foot pit and catch it. After the fish are put into the box, the sludge is washed and sundries are removed, and the fish that do not meet the edible standards are classified and transferred to other aquaculture water surfaces for stocking in the next year. In the process of fishing, we should pay attention to protect the fish body and put it into the cage in time to minimize the injury and death of the fish species and keep the live fish on the market.