The breeding age of koi fish is generally between 3 ~ 10, and its weight is above 1.5 kg. Parents who are excellent, strong, harmless and free from pests and diseases are selected, and male and female are separated 1 month before the breeding period. The breeding time of koi fish is usually around May every year. When the water temperature is stable above 16℃, the male and female fish in koi fish can be picked out according to the ratio of 1:3 and put into the prepared pool, and the disinfected fish nests can be put into the pool in advance. Let them lay their own eggs. After observing their spawning, take out the parent fish immediately and leave the fish nest in the pool to hatch. After 5 ~ 7 days, the fry are hatched and cultivated.

Second, the choice of pond

As an ornamental fish, koi fish Longfeng Fish not only considers its growth speed, but also emphasizes the cultivation of image beauty. Aquaculture products require beautiful body color and physique. In addition, the quality of the environment directly affects the body color of koi fish. It is best to choose humus soil in the pond, where the terrain is leeward and sunny, and grass is planted in the water. By artificially improving its living environment, we can achieve the goal of improving the dragon and phoenix koi fish. It is best to have spring water in the water, so that various mineral elements and other components in the water can increase the pigment of the fish body, and make the koi fish body more colorful and beautiful, with sufficient dissolved oxygen.