Why cant a fish live on land?

Answer 1

Because fish live on the oxygen derived from water. They do not have lungs as land animals do, only gills to separtate the oxygen from the water.

Answer 2

-its gills are adapted to extract dissolved oxygen from water and not land.

-the gills are more exposed to drought on land than in water, this could render the gills less efficient as a respiratory surface on land.

-muscular system of the mouth and operculum work in water and not on land.that is the valve system is watertight and not air tight.

Answer 3

Some can stop swimming, I am a Scuba diver and I have frequently seen sharks of a variety of species resting on the sea bed apparently 'asleep'. They can be like this for as long as the dive lasts (30-45 mins.) and are certainly not swimming.

The related answer below adds more information.

Answer 4

Because a fish has no lungs which are designed to transfer gasses like oxygen into the blood stream in a non submerged environment. The gills that a fish has is passed over surfaces by oxygenated water and from there it is taken through specialty designed tissue into their blood stream.

Answer 5

The can... Just not for long. Their skin may dry out.

Answer 6

no