Fish breathe with gills.
The gills are pink sheets. Number of sheets between 5-7 sheets. Each sheet consists of a pair of filaments.
On the surface of the filament there is a structure which is located in an alignment called lamela.
Fish breathe by the way
opening and closing the gills. Water entering the mouth will be released through the gills of the fish. A gas exchange occurs during the water through the gill sheets.
Water with a lot of oxygen content entering through the gills. At the same time, carbon dioxide exits through the blood vessels of gill sheets. Blood vessels will bind
oxygen derived from water.
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