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2007-08-28 18:03:27 · 4 answers · asked by Mr. Goodnight. 3 in Science & Mathematics Zoology

4 answers

Fresh water fish drink water, salt water fish absorb it, otherwise they would be overwhelmed by the salt and die.

2007-08-29 04:44:58 · answer #1 · answered by Lee H 3 · 1 1

Ofcourse, fish drinks water. It gets the dissolved oxygen from water only. It constantly keeps gulping water and releases through its gulls. The layers inside the gulls extract the dissolved oxygen from water.

For living, fishes need very less water. Animals are hot blooded, meaning they maintain certain temperature always. To keep the temp constant animals sweat. Also for metabolism, hot blooded need more water, mainly to carry nutrients to body part. Water is also used to flush the body constantly (Urine).

But fishes are cold blooded. They can adopt to the temperature of the environment. So ne sweating concept. Then for metabolism, they get water from the food that they eat. Flushing of body is done with the water that they breath. So no water rejection system. Only solid wastes they purge out. Hence their need for water is very very less. Body wetness is kept up by osmatic pressure between the skin and the water. That is water can always enter through / return through their skin to keep a balance of the body wetness.

2007-08-29 01:19:21 · answer #2 · answered by Anonymous · 0 1

Fish absorb water. It is called osmosis. Osmosis is the net movement of water across a partially permeable membrane from a region of high concentration to low concentration.

2007-08-29 01:15:36 · answer #3 · answered by Livvie 3 · 0 1

NO it is their breath of life'' don't forget the bubbles''

2007-08-29 02:23:43 · answer #4 · answered by kay kay 7 · 0 1

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