1, reducing labor costs. As mentioned above, cage fish culture is generally carried out in some relatively large waters, which basically utilizes the natural environment, and does not need to build and manage ponds, thus reducing the input cost. When feeding, the activity range of bait and fish is relatively fixed, so the bait fed will not cause too much waste. Using cages to raise fish does not need to artificially change the water quality, nor does it need to plant aquatic plants in the water, which is more convenient to manage. The size of the cage is basically fixed, so when the fish is long enough to enter the market, there is no need for too many people to participate in fishing.

2. Save land resources. As mentioned above, cage fish farming is generally carried out in relatively large waters, so people don't need to build ponds on the fields, which can save land use area and reduce the occupation of land resources. The saved land area can also be used for other purposes to improve people's utilization rate of land.

3. Increase the output of fish products. Using cages to raise fish in water can also increase the output of fish products in rivers and reservoirs. The existence of cages can improve the utilization rate of water space, and one or several fish products can be cultured in each water tank at the same time, which stimulates the growth of each other and enhances the physical quality of fish products, so that the growth condition will be better and the output will naturally increase.

4. Less equipment is needed. In pond culture, there will be anoxia in ponds, so it is necessary to prepare oxygen dissolving machines and other equipment to dissolve oxygen in time and change the water quality. However, for fish farming in waters, the water in rivers and reservoirs is circulating, and under the action of the big environment, these equipment are rarely needed.

5. The price of fish is higher. In pond culture, in order to improve efficiency, the density of fish is relatively high, and the growth quality of fish will also be affected by the environment. However, in these large waters, the growth environment of fish is better, which is close to the quality of wild fish, so the price will also increase.