1. Prepare breeding environment: If breeders want zebrafish to breed, they must prepare the tools and breeding environment for them. The water temperature for reproduction should be kept at 26 ℃. If conditions permit, it is recommended to install heating rods for constant temperature. The water quality should also be kept fresh. Filters can be installed, but the filters should not be turned too large.

2. Choose parent fish: Breeders need to choose mature zebrafish. When selecting, they can see whether their body color is bright, their characteristics are obvious and their personality is lively.

3. Reproduction: Zebrafish is an oviparous fish, which is fertilized and developed in vitro. During reproduction, the female fish first discharges eggs, and then the male fish discharges sperm. When fish eggs combine with sperm, they become fertilized eggs. However, not all fish eggs will become fertilized eggs, so breeders need to fish out unfertilized fish eggs separately to avoid polluting water quality.

4. Hatching: The breeder needs to hatch the fertilized eggs in water temperature between 26-28 ℃. After 2-3 days, the fertilized eggs can hatch into small fish.

1. Pay attention to the quiet environment: zebrafish are timid, so try not to make too much noise around them during reproduction, otherwise it may affect their reproduction and frighten them.

2. Pay attention to environmental stability: When zebrafish breed, breeders need to keep the environment in their breeding tanks stable. The temperature difference should not exceed 2 ℃, and the water quality should not fluctuate too much, so as to minimize the frequency of water change.