1. Water temperature: Newly hatched zebrafish are weak, so it is best for breeders to install a heating rod for them to ensure their water temperature is constant. The breeder can adjust the temperature of the heating rod to between 24-26 ℃, because within this temperature range, they grow best.

2. Water quality: Zebrafish does not require high water quality. As long as the breeder ensures that the water quality in which they live is clean, they can grow normally. However, newborn zebrafish are sensitive to fluctuations in water quality, so breeders should try not to change water within 7 days of their birth. Moreover, they are just born and small, so breeders should not open the filter to avoid them being sucked away.

3. Oxygen: Zebrafish have a high demand for oxygen, so breeders need to install an oxygen pump for them to ensure sufficient oxygen in the water.

Newly hatched zebrafish do not need to be fed immediately, because the vitellotin they carry in their bodies is enough for them to absorb for 2-3 days, so it is best for breeders to wait for them to be born for 3 days before feeding some highly nutritious and digestible foods.

The foods suitable for small zebrafish are shrimp eggs, Daphnia, small fish insects, backwater, paramecium, cooked egg yolk, etc. These foods are nutritious and easy to digest, which can ensure their adequate nutrition.