Fish like this very nice dolly varden in places like this sweet glacier fed river in Alaska are certain to change:
It is interesting how we tend to thing of climate change as something new, or that things are suddently now going to change with a new and increased awareness. It is also interesting to see how socially we talk about, posture and paint climate change as an entirely bad thing. Could it be possible that there are some good things that we might expect to see?
(I am half chinese after all...and consider myself a "part-time" philosopher).
(I'm serious here)
Here's a debris torrent in Oregon. While it povides much needed large wood for fish habitat, too much will scour out the river channels and dump some major fish habitat smothering fine sediment loads.
If you are cold water fish like a trout, you are not a big fan of the summer low flow and warm water situations and fish that depend on the cold flows higher in the mountains like cutthroat and bull trout will feel the crunch and drying smaller streams will either strand fish or make them move to unfavorably downstream areas or...die (sigh). For extremely cold water species like bull trout and headwater dependent species, or grayling that looks especially bad.
(Photos courtesy of BLM Fisheries Alaska, BLM Fisheries Oregon)