Humans and other land animals get oxygen by breathing it in and extracting it from the air. Some aquatic animals are air breathing – whales, for example, come up to the surface to breathe in lungfuls of air every few minutes.
Fish, however, have a different mechanism. Instead of lungs, they have gills. The fish allows fresh water, which contains dissolved oxygen, to pass into its mouth and over its gills. These are rich in blood vessels and also have a large surface area. The oxygen from the water passes into the blood of the fish by diffusion, and waste carbon dioxide passes out the same way.
As long as there is plenty of oxygen dissolved in the water, the fish can extract enough through its gills to gain enough oxygen for cellular respiration. Fish do get in trouble if the oxygen content of the water falls – for example, when water becomes polluted by sewage. Then, they suffocate.
Using gills, they pass oxygenated water over the gill surfaces, and
exchange O2/CO2 much as we do via our lungs.
Fish breathe through their gills.Oxygen is dissolved in water and the fish use that oxygen.
Fishes have Gills on two sides of their heads. They take water through their mouth and take it out of their gills. These gills have the ability to absorb Ozygen from water
The gills cause breathing in and out through those slits(gills) and fill through through the lungs. And as the water goes in side, the oxygen our human lungs cannot seem to be able to breathe in nor our eyes see, is inside the water and a special tube in it's body make the water separate from the oxygen. The water comes out but the oxygen is used. Imagining having to always suck in disgusting salty water just to breathe in through your mouth? Thank goodness for gills so you don't have to taste that water. Smiles! :)
Fish receive their oxygen by their fins and gills.
Fish breathe by their gills.
They have gills. Gills filter out the air from that water.
They get their oxygen by their gills.Sincerely, Berenice
They get it through their gills.
Fish have gills that help breathe.
Fish get oxygen from the gills. We, human can not breath from water, we breath from air.
Fish only breaths from water air.
Their is lot of oxygen dissolved in the sea water and then the fishes gulp them and the oxygen falls into its gills and then they breath perfectly and easily
bisma (the great)
They use there gills to breath underwater
They breathe in through their mouths and out through their gills....
Fish get oxygen that is dissolved in the water using thier gills.
With "Little Tiny" Scuba Tanks! Hope this helps?
They absorb the oxygen from the water through their gills.
They breath in through there mouth then out there gills. If they didn't have gills they would have to breath in disgusting salty water. (gross);)
They take in water with their gills then use the co2 and dispose of the remainder of water.
They breathe with gills. It helps them because they do not have lungs, like us!
Fish get oxygen out of a pip and it will bring oxygen
Is it true that fish have to fill their lungs with air to go underwater