The carp fry of 3 cm is in the vigorous growth period. Generally, they are fed with plant feed, but in order to ensure the balance of nutrients, they also need to feed with animal feed once a week.
1. Feeding: Carp fry are usually fragile. To improve the survival rate of carp fry, first of all, pay a little attention to the feeding of carp fry. Carp fry can be fed with red nematode, soybean milk, milk powder and other feed. When carp fry grow to more than 20 days, they can feed mealworms and other slightly larger food. When it grows to more than ten centimeters, it can be fed with germ feed, and when it is about 25 centimeters, it can be fed with artificial feed.
2. Fish tank: If the number of carp fry is large, you should choose a large fish tank. The purpose is to leave enough time for the carp fry to move. If the density is large, it is necessary to install an oxygen pump and filter for the fish tank to increase oxygen for the fish tank. During the maintenance period, it is necessary to pay attention to whether there is leakage or seepage in the fish tank, and if found, it needs to be dealt with in time.
3. Water quality: The carp fry does not have a high requirement for water quality, and it is usually necessary to ensure that the water quality is in a transparent state. It is better to use old water for breeding carp fry, and every time the water is changed, the water can not be poured out completely, and two-thirds of the old water needs to be left at the bottom. It is enough to change one third of the water every time. As a rule of thumb, change the water once or twice a week. If the temperature is too high, it is necessary to increase the number of water changes and change the water every other day.
