The breeding cycle of ruby is relatively short. In a suitable environment, parent fish can lay eggs again 20 days after laying eggs. If the eggs are taken out for artificial hatching after the parent fish lays eggs for the first time, and the parent fish are not allowed to be responsible for hatching and taking care of the small fish, this time can be shortened again to about 15 days. But if the environment is not suitable, their breeding frequency will be reduced, or even they can't reproduce directly. 1、 How to breed Ruby fish 1. Select parent fish: Generally speaking, female Ruby fish can be used for reproduction when the body is about 10cm long. Male fish can be used for reproduction when their body length is 8-9cm. To reproduce, we need to select some female fish with a body length of more than 10cm and an enlarged abdomen and male fish with a body length of more than 8cm as parent fish, and put them in a larger fish tank.
2. Split tank breeding: after the parent fish are placed in a large fish tank, they will mate freely. After pairing, they can be moved to a breeding tank with a length of 80cm, a width of 40cm and a height of 50cm. Only one pair of parent fish is placed in each breeding tank. Before the parent fish enters the tank, the water temperature should be adjusted to 28 ℃, the hardness of the water should be adjusted to 9.2, and the pH value of the water should be adjusted to 7.2. Such water is more suitable for their reproduction. Also put a piece of smooth porcelain in the jar as a spawning board.
3. Spawning and hatching: after the parent fish enter the tank, they will begin to lay eggs and reproduce. After spawning, parent fish will be responsible for hatching and taking care of small fish until they learn to hunt. This takes about 8-10 days. During breeding, pay attention to keep quiet and don't disturb them except feeding, so as not to scare them and affect breeding. 2、 How often do Ruby fish breed? The breeding cycle of ruby fish is very short, only about 20 days. Under suitable environmental conditions, they can lay eggs again in only 20 days from the first egg laying. If the parent fish are not allowed to hatch eggs during reproduction, but hatch eggs manually, the time can be shortened to about 15 days. （GongBaoDanYuZenMeFanShi，DuoJiuFanShiYiCi）