they are cold blooded. All bodily funcions slow with the lowering of temperatures.
Goldfish breathe slower in cold water because there is more oxygen in cold water. Therefore they don't have to breathe as much to get the amount of oxygen they need
They use their gills to breathe under water.
Most fish do... unlike the betta fish they can breathe water and air. Dolphins and whales are an example of ones that breathe only air. Sharks, gold fish and other fish have to breathe water.
Fish breathe oxygen, which they extract from the water with their gills.
Fish have evolved to breathe in the water.
No, they are fish and must be in the ocean to breathe.
Because fish have gills, and breathe water- and I cant!
they have gills
WATER
whales can breathe underwater that is why they live in water but sometimes they have to come up to breathe like fish
well yes they do 'breathe' underwater with their gills
they cannot breathe out of water.