Does a fish ever get thirsty?

TheAlphaWolf

Seawater has a higher salt concentration than the body fluids of fish. Therefore, fish in saltwater constantly lose to the sea. These fish have to drink continually, urinate very little, and push the salt out through their gills. Freshwater has a lower salt concentration than the body fluids of fish. Fish living in freshwater never drink. Freshwater tends to flow into their bodies. If freshwater fish drank even a little, they would swell up. http://www.dfo-mpo.gc.ca/canwaters-eauxcan/bbb-lgb/school-ecole/activities/act1_e.asp once again, it depends. Oct 10 04, 2:04 PM

Legolaschic

All living things need water to survive, whether they drink it, absorb it by diffusion or otherwise obtain it, they must have it. Most of a cell's matter is made up of water so without water cells can't reproduce, and if a cell were to lose water it could and most likely would die, depending on how much water it had lost. And as organisms are made up of cells, the same holds for them, including fish. In addition, other functions carried out by organisms require water. Oct 10 04, 9:17 PM

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