If the size of the courtyard fish pond is appropriate and the water quality is effectively controlled, economic fish can be cultivated completely. Some common economic fish species, such as carp, grass carp, mandarin fish and snakehead, are very popular in the market because of their delicious meat and rich nutrition. At the same time, fish farming is also a beneficial hobby, which can increase the fun of life.

However, the cultivation of courtyard fish ponds needs to pay attention to the control of water quality. The water body of the courtyard fish pond is relatively small, and the water quality is easily influenced by environmental and feed factors, and it is easy to produce rotten substances and harmful gases, which leads to water pollution and affects the breeding effect. Therefore, it is necessary to change water regularly, clean up feed residue and sediment, add proper amount of water conditioner and feed, and keep sufficient oxygen and nutrients in the water to promote the growth and reproduction of economic fish.

In the process of economic fish breeding, there are many feeding methods, artificial feed feeding and natural feeding. For courtyard fish ponds, artificial feed is a convenient feeding method, and suitable feed can be selected according to the needs of different fish species. Natural reproduction requires that there are enough aquatic organisms in the fish pond, such as earthworms and plankton, to provide the nutrients needed by fish.

In terms of fish reproduction, artificial control methods, such as artificial insemination and temperature control, can be used in courtyard fish ponds to promote fish reproduction. At the same time, we should also pay attention to protecting the ecological environment of fish, avoiding over-breeding and over-fishing, and maintaining ecological balance.

Generally speaking, it is interesting to cultivate economic fish in courtyard fish ponds, but it is necessary to pay attention to the control of water quality and the scientificity of feeding methods in order to achieve good breeding results.