The Osteichthyes is evolved from lungs of early bony fish. The fish have many types of evolved.
Mammal is to lungs as fish is to gills.
Do butterflies have lungs?
Fish Use Gills Instead of lungs. Gills Help fish to Breath. Fish Use Gills Instead of lungs. Gills Help fish to Breath.
fish are fish. if they could breathe above water they would be a mammal. no fish have lungs only.
Only whales have lungs .No other fish has lungs they have gills.
Whales breathe with lungs, and fish use gills.
Pneumonia is a disease of the lungs. Fish have gills and do not have lungs. Ergo! Fish can not suffer from pneumonia, so pneumonia can not kill fish.
Whales have lungs, as they are mammals, and fish use gills to breath.
fish!
Fish
wings, lungs