Originally Posted by tadpole
Correct. Warm water will hold less Oxygen than cold water. That is not what you implied in your post.
Sorry, I take that as a given. Yes, warm water holds less oxygen, just when fish need it most.
I'm just saying that even in cold water, the maximum amount of dissolved oxygen is very small. Oxygen's solubility in water just isn't that great, and no matter how slow a fish's metabolism is in cold water, the amount of available oxygen is still finite.