1. Why don't domestic koi breed The failure of domestic koi breed is either a fish problem or an environmental problem. If it is a fish problem, it may be that koi fish itself is not mature, or it may be that all the fish raised are male or female. If it is an environmental problem, it may be that the space is too small or the temperature is too low, so that fish can't reproduce normally. To reproduce successfully, it is necessary to keep the temperature at about 18 ℃ and oxygenate the water.
2. How to breed koi1. Parent fish selection: As a parent fish for breeding, at least the following requirements should be met: first, it is robust and healthy; Second, it is colorful and the scales are smooth, neat and flawless. Furthermore, in order to make the quality of small fish better, it is necessary to select koi with obvious variety characteristics.
2. Natural insemination: When the breeding season comes, females and males need to be put together in the spawning pool. After insemination, if there is a phenomenon that the male fish has been chasing the female fish, then it means that the female fish is about to give birth. At this time, prepare the fish nest and put it into the spawning pool.
3. Oviposition: Female fish usually lay eggs from about 4 o'clock in the morning to 10 o'clock in the morning or even close to noon. After female fish lay eggs, in order to prevent them from eating the newly laid eggs, it is necessary to take out the fish nest with eggs in time.
4. Hatching: After the fish nest is taken out, it can be disinfected with salt solution or malachite green solution to avoid the occurrence of water mold. After disinfection, it needs to be put into the incubator. The water temperature needs to be adjusted to a higher level in order to hatch quickly. Generally speaking, if the water temperature is 18 degrees, it takes 4-5 days to hatch; If the water temperature is 20-22 degrees, it will take 3-4 days to hatch. After hatching, it is necessary to take good care of the small fish.
