from bubbles that escape from rocks or waterfalls or bubble makers that fish owners but in the tanks.
Tadpoles get oxygen from water like fish do.
Fish can absorb water by the gills
The property of water that allows fish to breathe is its ability to dissolve oxygen. As water flows over the fish's gills, oxygen molecules from the water diffuse into their bloodstream, allowing them to extract oxygen for respiration.
Fish breathe through their gills, which are specialized organs that extract oxygen from water. As fish swim, water passes over their gills, where oxygen is absorbed and carbon dioxide is released. This process allows fish to extract oxygen from water and use it for respiration.
Fish have gills, which allow them to take oxygen out of the water, just as we take oxygen out of the air, to put it simply.
Oxygen
Oxygen
Fish get oxygen from the water using their gills
No, not at all. Most fish extract the oxygen that is dissolved in the water, not the oxygen that is bound to hydrogen in the formation of water. This is one reason that most aquariums have an aerator bubbling away - it is adding oxygen to be dissolved by the water.
Of course all fish need oxygen even puffer fish....
They need water Fish can not process oxygen the same way mammels do. They get their oxygen throu molecules in the water.
Fish have lamellae in their gills. As the water flows through the gills and over the lamellae, the oxygen is extracted from the water.