There are many kinds of tropical fish, some prefer high temperature, and some can adapt to low temperature. If it is a species that prefers high temperature, it will often die in the environment below 20 C, so such fish can not be raised. Some slightly cold-tolerant fish can sustain life at 18 degrees Celsius, but that's all. If you want it to grow well, you still need to control the temperature above 20 degrees Celsius.
? 1. Guppies: Guppies have good resistance to low temperature. Compared with other common species, they can survive at 16 ℃. However, the low temperature will cause its appetite to be affected, and may even not eat, in this case, it is necessary to raise the water temperature appropriately.
2. Angelfish: Angelfish, also known as swallow fish, is native to South America. Its dorsal and anal fins are so large that it looks like a flying swallow. The length of this kind of fish is between 12-15 centimeters, the character is more quiet, very suitable for polyculture, and it is also more resistant to low temperature in the short term.
3. Map fish: Map fish is a large tropical fish. It lives in the middle and lower layers of the water body. It is not strict with the water quality. It can live in both weak acid and weak alkaline water. It is suitable for the environment of 22-32 ℃, but it can also tolerate the water temperature below 20 ℃.
