how do fish breathe in water
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they breathe through GILLS in the water
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Through gills , as we know that we have lungs for respiration same way fishes have gills to breath oxygen that is dissolved in water .
Except the lungfish, all other fishes breathe by means of a special structure called gills. They do not have lungs like human beings nor do they breathe through their noses. Their process of respiration is completely different from ours. They take water in their mouths for the purpose of respiration. This water flows over the gills and comes out through the openings behind the cover of gills. The cells of the gills absorb the oxygen in water.
Since the surface area of the gills is quite large, the amount of oxygen absorbed is also considerable. The oxygen gets mixed in the blood and is circulated throughout the whole body. That is how it purifies the blood. The carbon dioxide produced in the body is brought to the gills by the circulating blood where it gets dissolved in water and passes out of the body. In this way, the cycle of respiration in the fishes continues.
If the water is dirty, the fishes sometimes come up to the surface of water and take air in for breathing. However, they do not use gills for this purpose, the fish is a cold blooded creature. It is also sensitive to touch, taste, smell, etc. it has different organs for these functions. Scientists have already studied more than 20,000 different species of fishes.
hope that helps ya ⭐⭐⭐⭐⭐!
Except the lungfish, all other fishes breathe by means of a special structure called gills. They do not have lungs like human beings nor do they breathe through their noses. Their process of respiration is completely different from ours. They take water in their mouths for the purpose of respiration. This water flows over the gills and comes out through the openings behind the cover of gills. The cells of the gills absorb the oxygen in water.
Since the surface area of the gills is quite large, the amount of oxygen absorbed is also considerable. The oxygen gets mixed in the blood and is circulated throughout the whole body. That is how it purifies the blood. The carbon dioxide produced in the body is brought to the gills by the circulating blood where it gets dissolved in water and passes out of the body. In this way, the cycle of respiration in the fishes continues.
If the water is dirty, the fishes sometimes come up to the surface of water and take air in for breathing. However, they do not use gills for this purpose, the fish is a cold blooded creature. It is also sensitive to touch, taste, smell, etc. it has different organs for these functions. Scientists have already studied more than 20,000 different species of fishes.
hope that helps ya ⭐⭐⭐⭐⭐!
repanzel:
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