Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to


Different organisms have different respiratory organs. In humans it is the lungs while in the aquatic animals like fishes it is the gills. Gills are actually the projections of the skin which are richly supplied in blood vessels. They help in taking the oxygen which is dissolved in water. Afterwards the process of respiration takes place.

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