1, low cost and high output.
Although it is necessary to prepare corresponding cages according to the number of fish cultured in cages, it will cost the cages. However, compared with the traditional fish culture mode, the cost of cage fish culture is lower than that of traditional fish culture. Whether in breeding, management or fishing, its cost is relatively small. Moreover, the yield of cage fish culture is also relatively large. Under normal circumstances, cage fish farming is carried out in an area of about 40 square meters. Then the output of most fish can reach tens of thousands of kilograms.
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2. Land saving and high price.
Cage fish culture is not restricted by region. In the traditional pond culture, if there is no pond, you need to occupy land to develop the pond. Cage fish culture can be carried out directly in rivers and reservoirs without competing for water. At the same time, traditional fish farming requires aquaculture equipment such as aerators and bait machines, which are basically not used in cage fish farming. Moreover, the overall quality of cage fish culture is relatively high, so the market price is higher than that of traditional fish culture.
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Second, shortcomings.
1, the medication is inconvenient.
The disease resistance of most fish is still relatively poor, so when we raise fish, we need to regularly put drugs to prevent diseases. If parasites or viruses are found in cage fish culture, it is not only inconvenient to put drugs. Moreover, the dosage of drugs is ten times higher, which is very unfavorable to the stability of drugs and the safety of farming. If the weight is relatively large, it will also affect the new metabolism of fish. In recent years, the key points that the state attaches great importance to in protecting the environment may be removed if the procedures are not standardized and carried out privately.
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2, the proportion is high and disaster prevention is difficult.
As I said just now, the proportion of fish culture in cages is relatively high. The density of each cage is relatively large, so the requirements for natural bait for fish will also increase. If it is farmed in a large area, natural bait will be scarce. Compared with traditional fish farming, cage fish farming can't control natural disasters like pond culture. For example, when the flood comes, the cage can't be saved basically, and the culture can't be achieved.