Thinking too much...

[dixaisy930]

Just a question that popped into my mind....

Do fish drink water? If so, how much?

 

[modernhamlet]

It's my understanding that only marine fish "drink" water. This is due to osmosis.

Here's an explanitory link to what appears to be a very well done "kid's site" from Canada's Dept of Fisheries and Oceans:

http/www.dfo-mpo.gc.ca/canwaters-eauxcan...ties/act1_e.asp