The lungs of mammals would not work very well for a fish, because one breath underwater would fill them with fluid and make them useless. Nonetheless, fish need oxygen to breathe, too. In order to remove oxygen from the water, they rely on special organs called "gills." Gills are feathery organs full of blood vessels.
No. Puffer fish can only survive in the ocean.
Blob fish survive by laying on the bottom of the ocean floor and eat anything that floats by!
so we can have water and we need to survive and also eat fish
Antarctica is a continent. Fish are sea animals. The Southern Ocean habitat -- that surrounds the Antarctic continent -- is native to fish that survive and thrive there.
food and a way to breath
The smaller fish eat moss and algae off the rocks to survive, while the bigger fish eat the smaller fish to survive.
Certain fish and squid
They don't. Fish that live at a high depth stay there for as long as the live, as they would explode when pressure dropped. The same is true for fish that live high up in the ocean: they would implode when pressure rises.
Blob fish survive by laying on the bottom of the ocean floor and eat anything that floats by!
All aquatic creatures are affected by pollution. Due to it destroying their homes or killing the fish some fish eat to survive.
Orcas require an ocean to survive and could not live in a barren desert.
Well if you do that it can be hard for them to survive because they are so used to the Ocean! I'd rather not do that!