The growth time of cultured carp is at least two years. From fry to fish in the first year, it is about 1 kg in the second year, and it can grow to 3 kg in the third year. The water temperature in koi fish is 13- 15 degrees Celsius. It is recommended to feed once every two to three days. You can choose to feed vegetables or low-protein wheat germ feed.

Expanding information carp culture mode;

Put carp varieties of different sizes in batches, which is convenient for catching and releasing in turn. This model is based on compound feed, with crude protein above 30%, 4-6 times a day, and the feeding rate is 3%-8%.

In addition to the essence of traditional "water, seed, bait, density, mixing, rotation, prevention and management", there are new "communication" strategies: superior seed, fine material, good water and fine management.

Due to the cold current in Ningxia in early May, the water temperature in the pond dropped to 65438 04℃, and the survival rate of early fry in conventional fish ponds was very low. In this experiment, the early fry were exposed to low temperature for many times, which restricted the improvement of fish species specifications in that year. It is imperative to develop ponds in early seedling greenhouses, and a certain scale of early seedling greenhouses should be built in qualified fishing grounds.

Source: Baidu Encyclopedia-Early Seedling Raising of Crucian Carp