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Old 07-10-2009, 03:05 PM
BlinkingDuck BlinkingDuck is offline
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Join Date: Sep 2000
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Originally Posted by Laudenum View Post
I thought that the problem of fresh water v. salt water was one of breathing (gills etc).
And since sea mammals breath air, it isn't a big deal for them.
That and, I think, swimming under water. A salt water fish put into fresh water has trouble swimming. I've seen this in pet stores when a feed fish is put into a different tank for a predator fish.

The effect may only be temporary/they might adjust. I don't know.