The reason why fish live in water is that they are more adapted to the aquatic environment in all aspects, and less adapted to the land. For example, fish breathe with gills, gill filaments in the gills can only complete gas exchange when water passes through, in the air will stick together, nothing more than to breathe. And they don't have the limbs of terrestrial animals, just fins, which allow them to balance in the water and swim easily.
1. Climbing perch: Climbing perch is a kind of small freshwater fish. Its body is oval and its head is relatively round and blunt. It likes to inhabit rivers and ponds with slow water flow. It mainly feeds on small fish and shrimps. The gill apparatus of this fish is very developed, which allows it to breathe in the air and live for a long time even out of water. Moreover, its pectoral fins are well developed, and it can move on land with the help of pectoral fins and gill cover to find new water sources for migration.
2. Mudskipper: Mudskipper is a kind of fish with a relatively long body. It is not big and generally lives in shallow water areas such as estuaries and harbors. When the tide goes out, they stay on the beach and hunt there. In addition to breathing with gills, the fish can also use skin and oral mucosa to absorb oxygen, so it will not die after leaving the water, but it must return to the water before being dried in the sun.
3. African lungfish: African lungfish is a kind of amazing fish. They are distributed on the African continent. Due to the special local climate, they enter the dry season at regular intervals. At this time, they will get into the mud to aestivate and will not die for several months.
