A 25 cm fish tank can raise 6-10 zebrafish. Although the 25 cm fish tank is not very big, the zebrafish is not big, and their space requirements are not very high, so the 25 cm fish tank can raise about 10 zebrafish.

If the breeder wants to raise more than one, they should be equipped with an oxygen pump. Because zebrafish have a high demand for oxygen, and the feeding density is too high, the oxygen in the water will also decrease, so it is necessary to install an oxygen pump to ensure sufficient oxygen in the water where they live. If oxygen pumps are not installed, breeders should reduce the feeding density, so as to ensure that they can live normally.

Zebrafish can be polybred. They are gentle and have no aggression. Breeders can choose some small tropical fish with the same gentle personality to keep them together, so as to avoid their fighting. More suitable is guppy, moonlight fish, Mary fish, traffic light fish, lotus lantern fish, white cloud golden silk fish and so on. These tropical fish have strong adaptability and low requirements for the environment. As long as the breeder can ensure that their living space, food and nutrition are adequate, and the water temperature and quality are stable, they generally do not fight.