They use organs called gills that absorb the oxygen from the water. As far as amphibians go, they have both gills and lungs and are able to breath from the water and the atmosphere.
they have oxygen they have to have oxygen
Fish are fish, their own group. Frogs are amphibians though.
Amphibians are said to have evolved from fish such as the lungfish or lobe finned fish. These fish's ponds may have dried up and the fish had the need to develop a lung and legs to breathe oxygen and walk on land. Amphibians technically do not live on land though because they spend most of their lives near bodies of water.
Fish, and then amphibians, and then reptiles, and then mammals
No. Clownfish are fish. Amphibians include frogs, salamanders and caecilians.
Amphibians
Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.
All living animals inhale oxygen. It is contained in air and in water (for fish and amphibians)
axotles = amphibians
Fish
Fish appeared earlier. Amphibians later branched off from them.
Fish aren't amphibians. Among other things, amphibians can breathe out of water, something most fish can't do.