The same way as other animals with "lungs".
Air is taken into the body and gaseous exchange occurs with the red blood cells.
The "lungs" of a lungfish are much simpler in structure than those of a mammal. They are just simple sacs, rather then the spongelike structures of mammal lungs. The general way they work is the same as a mammal's lungs, but they are not as efficient, having a smaller surface area.
Lungfish have 2 lungs but the Australian lungfish has 1.
The four types of lungfish are the south American lungfish, the African lungfish
Spotted African Lungfish was created in 1900.
Gilled African Lungfish was created in 1844.
West African Lungfish was created in 1839.
The African Lungfish can become about 6 feet 2 m long.
The lungfish has both gills and lungs.
Polypetus and lungfish
yes
As soon as it developed lungs
yes it's the lungfish, it has lungs and gills
Anguilliform or eel-like See Link