? There are many kinds of fish, and their adaptability to temperature is quite different. Common ornamental fish are mostly tropical fish, which are afraid of cold, and the water temperature can not even be lower than 20 C, otherwise their vitality will be greatly reduced, or even frozen to death. Eurythermic fish and cold-water fish are less afraid of low temperatures, as long as the water is not frozen, the fish will not freeze to death. In addition, some deep-sea fish can even tolerate the environment of 0-2 degrees Celsius.
? 1. Koi: Koi is cultivated from carp, so it inherits some characteristics of carp. It is not very afraid of cold. It belongs to eurythermic fish and can survive in an environment above 5 ℃. As a high-grade ornamental fish, it has many varieties, and its color is generally mixed with white, red and black.
2. Goldfish: Goldfish has a strong ability to adapt to the environment and is not afraid of the cold, especially the most solid grass gold. As long as the water does not freeze, it can live. However, it should be noted that some varieties are more delicate, so it is better to control the water temperature so as not to freeze to death.
3.: It is a small freshwater fish. It is distributed in many parts of our country. It likes to live in slow-flowing waters. It has a good ability to adapt to temperature and can be raised without heating. The life span of this kind of fish is not very long, and its feeding habits are relatively miscellaneous.
