Considering the different characteristics of each type of goldfish, it is best to understand the habits and environmental requirements of each type of goldfish before polyculture. Goldfish are more suitable for polyculture with lantern fish, angelfish, fortune fish and small tropical fish. The size of these fish is not much different from that of goldfish, and some small fish that are more flexible can also be raised. Goldfish cannot eat them. You can also exercise while chasing.

Goldfish are not suitable for mixing with other tropical fish species, such as betta , koi, golden crucian carp and other fish can not be mixed. Because their habits and care conditions are different. Moreover, goldfish eat a lot, and if they are mixed together, other fish will not get enough food and will be malnourished. In addition, the respiration of tropical fish is less, and the oxygen consumption of goldfish is larger, and polyculture is likely to cause premature death of goldfish due to hypoxia.