Do fish drink water?

Do fish drink water?




 Do fish drink water?


  Fish live in water. But do they drink water? Let's see...

  Fish take in water usually through their mouth or gills, depending on whether they live in freshwater or saltwater. Freshwater fish takes in water mainly through its gills.

  Because it has less water and more salt concentration in its blood than the surrounding water. Hence, due to osmosis, water from the surrounding flows through the gills into its bloodstream.

  However, as the fish is continuously taking in water, it urinates a lot and removes excess water. Saltwater fish takes in water through its mouth.

  This is because its blood has more water and less salt concentration than the saltwater around it. Hence, to maintain the balance, the fish gulps saltwater through its mouth, filters the water for its use and expels excess salt while urinating.

  So apparently, fishes drink water but they do so for breathing. And they drink some of the water for the body.
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