The density of fish in ponds is not fixed. On the one hand, it depends on the species of fish; on the other hand, it depends on the size of the fish. Conventional fish species can be raised about 600-1200 per mu. If the breeding density is too large, the oxygen in the pond can not meet the breathing of fish, which will lead to a large number of deaths, thus polluting the water quality, and also have a negative impact on live fish. If the breeding density is too small, the maximum value can not be brought into play.
1. Area: The first thing to look at for raising fish in a pond is the area. At the same time, there is also the depth. Different fish have different requirements for the water body, and the depth of the water is also different. Some like shallow water, and some like deep water. The area of the pond determines the number of fish, in order to be on the safe side, before fish farming, but also to clean the pond, the whole pond sprinkled with quicklime disinfection, in order to prevent harmful bacteria from invading the fish body, leading to illness and death, resulting in economic losses.
2. Fish species: The first step in fish farming is to consider the selection of fish species. On the one hand, it is necessary to select a species suitable for local farming, and on the other hand, it is necessary to see how its economic benefits are. At present, that fish culture in a pond mostly adopt a nested culture mode, and several kinds of fish can be culture in one pond, so that the culture quantity can be effectively increased, and the economic benefit is improved; however, attention should be paid to the selection of mixed culture, and the fish with conflict should not be cultured together.
3. Feed: Feeding fish also needs to pay attention to feeding feed. Usually, before raising fish, base fertilizer can be applied first, so that plankton in the water body can multiply in large quantities, thus providing certain food for the fish. After fish farming, it is necessary to feed regularly and quantitatively to ensure that it grows well.