It's a good question and a difficult one to answer. There are a lot of uncertainties and unknowns with respect to climate change.
However, for the most part, on a personal and professional level, I don't see a lot of good things happening, especially for the cold-water, sensitive and more vulnerable fish species that come to mind. We're seeing it now.
There are a lot of good studies out there, particularly in Ontario in Algonquin Provincial Park. The climate change trends internationally and on a smaller scale are the same as those we see in Algonquin Provincial Park. When you look at brook trout and lake trout populations at risk there, you see a major threat.
In terms of aquatic invasive species, there are obviously some concerns there too.