1. Stable water temperature: The breeding conditions of zebrafish are not harsh, so long as the water temperature is kept between 24-26 ℃ during breeding. The water temperature for reproduction should not be too high or too low, because both too high and too low water temperature will affect their reproduction. If conditions permit, it is recommended to install heating rods to keep constant temperature.

2, clean water quality: Zebrafish usually does not require high water quality, but when breeding, it is best for breeders to keep the PH value between 6.5 and 7.5. The hardness of water should also be kept between 6 and 8. The water used for reproduction should also be kept clean and fresh, and the frequency of water change should be minimized.

3. Quiet environment: Zebrafish are less daring, especially when breeding, and are easily frightened. When they breed, it is best for breeders to keep their surroundings quiet.

Zebrafish reproduction mode is oviparation, and they are fertilized in vitro. When breeding, zebrafish males will keep chasing females. If the female fish accepts their pursuit, they will chase each other with them. In the process of chasing, the male fish will stimulate the female fish to ovulate, and after the female fish ovulates, the male fish will inseminate forward. At this time, fish eggs will become fertilized eggs, which can only become small fish after hatching.

Zebrafish have no habit of protecting eggs. After they are allowed to breed, breeders need to fish out their parents immediately to prevent them from eating their eggs as food.