1. Fish with fierce character: Zebrafish has a mild character, although it is usually lively, but it is not aggressive. Zebrafish may be bullied if breeders keep them with ferocious fish.

2, larger fish: Zebrafish is a small fish, and its body length can grow up to 6 cm in adulthood. If they are mixed with larger fish, they may be eaten directly. Even if they are not eaten, they can't live around large fish.

3. Cold water fish: Zebrafish are tropical fish and like to survive in water temperature between 24-26 ℃. The water temperature that cold water fish can adapt to is low. Although zebrafish can be cold-resistant, living in cold water for a long time will also affect their growth and development. Therefore, zebrafish is not suitable for raising with cold water fish.

Zebrafish have mild personality, low requirements for the environment and strong adaptability, and can mix with most small tropical fish. The more common ones are guppy, moonlight fish, traffic light fish, Mary fish, lotus lantern fish, white cloud golden silk fish, penguin fish and so on.

These fish and zebrafish are similar in character, and have low requirements for the environment, so they are very suitable for polyculture with zebrafish. Although they are small in size, breeders should also pay attention to the density of feeding, otherwise there may be hypoxia.