What Fish Are Suitable for Raising in Stagnant Ponds? A Detailed Guide to Farming Techniques and Precautions

AbstractStagnant fish ponds are suitable for polyculturing grass carp, silver carp, bighead carp, common carp, crucian carp and other fish, generally in equal proportions. In a stagnant fish pond with no artificial oxygen supply, this kind of polyculture makes good use of the water at different depths and can also improve the utilization rate of the feed put in.

The environment is very important for any living thing, and a stagnant fish pond has relatively poor water quality, but even in this kind of pond you can still polyculture grass carp, silver carp, bighead carp, common carp, crucian carp and other fish, putting them in according to a certain ratio. If you want to raise more fish in a stagnant pond, then of course you need to change the water quality. Let us take a closer look below.

What fish are suitable for raising in stagnant fish ponds

Stagnant fish ponds are suitable for polyculturing grass carp, silver carp, bighead carp, common carp, crucian carp and other fish. Generally a ratio of 1:1:1:1 is enough. This kind of polyculture makes good use of the water at different depths and can also improve the utilization rate of the feed put in. Without artificial oxygen supply, you can consider putting in about 1 to 3 fish per sq m, and about 300 or more in 40 sq m, choosing fish within one jin each. You must not stock them too densely. If the weather is muggy and there are a lot of floating plants, a film may also form on the water surface. Also, if the pond embankment is too high, the wind cannot reach the water, which easily leads to oxygen deprivation. In order to increase the stocking density and prevent fish from getting sick, you can consider buying an aerator.

Fish farming techniques and precautions for stagnant fish ponds

1. Fish farming techniques for stagnant fish ponds

1. Find living water and lead it into the pond. If there is no source of living water near the stagnant fish pond, such as a river, then you must first raise only a small number of fish, and the density should not be too high or they will easily get sick. If there is living water nearby, find the water source and lead it into the pond; this way the water quality is improved, which helps you raise more fish.

2. Clean out the sludge. For a stagnant pond, first drain the dirty water. If you can smoothly clean out the sludge, then you remove some harmful microorganisms in the water, which can reduce some harmful propagating plants, thereby purifying the water. The fish then have better oxygen and are easier to keep alive.

3. Drain the dirty water and sludge, then sun the pond and disinfect it. For a pond that has already been cleaned, it is best to let the sun bake it for a week, because the sun's ultraviolet rays have a sterilizing effect. Sunning is very good for the pond. You can also spread quicklime powder, about 200 kg per mu, or use bleaching powder, 1 to 2 kg, to disinfect it.

4. Fill with water and raise the fish. At this point you can fill it with fresh living water, then calculate the number of fry according to the area, and put the fry in for stocking. It must not be too sparse or too dense. Pay timely attention to the water quality and the health of the fish, and feed them every morning and evening.

2. Precautions for raising fish in stagnant fish ponds

1. The main problem with a stagnant fish pond is the lack of oxygen, so you must find a way to supply oxygen to the pond. If there is no living water around, you can use an aerator to add oxygen to the water of the stagnant fish pond, which is what helps the fish grow. This point must be noted.

2. If living water is led in, you need to set up a filter net where the water flows, which can filter out some harmful impurities and improve the water quality. During the raising process, some aquatic plants must be placed in the water, and some living water needs to be added every so often.

The basic conditions for raising fish are water quality, temperature, area and so on, and what a stagnant fish pond lacks is exactly these most important conditions. If you want to turn a stagnant fish pond into a normal pond that can be used for farming, then you have to change its water quality.