The living environment of freshwater fish and marine fish is different. The former lives in fresh water, while the latter can only live in sea water. This leads to a very big difference in their habits and characteristics. Carassius auratus is a kind of common fish in China, which is widely distributed. Crucian carp belongs to freshwater fish, not marine fish, because they can only live in freshwater. Specifically, in addition to the Qinghai-Tibet Plateau, crucian carp is distributed everywhere. In rivers, ponds, lakes and other freshwater waters everywhere, crucian carp can often be seen. In addition to our country, they have also been introduced to other countries, in all parts of the world can live in fresh water.
Crucian carp can also be cultured artificially. As an economic fish, it is more appropriate. Most of the culturists cultivate this kind of fish on a large scale. Cultured crucian carp also live in fresh water, because they have adapted to the freshwater environment.
It has been introduced above that crucian carp belongs to freshwater fish, not to marine fish, whether it is wild crucian carp or artificial breeding crucian, it needs to live in freshwater fish. In the long process of survival, crucian carp living in fresh water, has been fully adapted to the environment in fresh water, their body structure and physiological regulation are suitable for freshwater environment. There are many differences between seawater and freshwater, if crucian carp live in seawater, their bodies may not be able to adapt because of environmental mutations. If the situation is more serious, it may directly lead to the death of crucian carp, so crucian carp in the sea is generally not alive.
