Sunfish is a kind of fish, their body color is very bright, there are many different colors of stripes, they are also because of its bright color and get the name. Marine fish and freshwater fish are two kinds of fish with different living habits, the former lives in the ocean, the latter lives in fresh water. From the living environment of sunfish, they belong to freshwater fish.
The origin of sunfish is in the Americas. Sunfish are mainly distributed in the United States, in the southern United States in many lake systems have sunfish distribution; There are also Mexico, in the back of Mexico rivers, lakes and other freshwater waters, there are sunfish. It can be seen that sunfish are distributed in freshwater in their origin and belong to freshwater fish. Later, it was introduced into other countries, and it was also distributed in China, and many of them were cultured artificially. They also live in fresh water.
As mentioned above, the sunfish is a freshwater fish. Whether it is the sunfish originating in the Americas or the sunfish introduced into China later for artificial breeding, they all live in fresh water. Therefore, the sunfish has adapted to the freshwater environment in this long process, and their body structure is also suitable for the surrounding freshwater environment. Therefore, we can not use seawater to breed sunfish. If you put sunfish in the sea, they may not adapt, because the sea contains too much salt, and freshwater environment is very different; Moreover, the pressure in fresh water and sea water is different, and sunfish may have problems because they can't adapt to it for a while.
