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.
No, saltwater bullheads are fish that require water to breathe using their gills. They do not have the ability to breathe out of water like some other species of fish.
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 have evolved to breathe in the water.
Because fish have gills, and breathe water- and I cant!
Fish breathe underwater using their gills. As water passes over their gills, oxygen is absorbed from the water and carbon dioxide is released. This process allows fish to extract oxygen from the water and breathe efficiently.
No, they are fish and must be in the ocean to breathe.
they have gills
WATER
well yes they do 'breathe' underwater with their gills
whales can breathe underwater that is why they live in water but sometimes they have to come up to breathe like fish