hey
I've caught a WHOLE lot of fish that have hooks down in their gullet, and are living just fine. It is ok to take them out of the water a bit for a picture, and if the hook is too deep to pop right out, just cut the line, the fish will be ok. I've seen a fish caught that was missing both eyes, and had been for a while. Strange, but it really shows how hardy they are. Down here on the coast, there are several fellow shark fishermen who participate in a national tagging program, and believe it or not, some of the sharks are recaptured, and people get to find out how much the shark has grown and traveled in the time since they were first caught. This is just on a small fishing forum, there's no telling how many of them are re-caught by people who do not belong to the forum, so I would say catch and release is for the most part effective, no matter the circumstances. Sharks are actually pretty delicate, believe it or not.
Back to the subject of your catch, nice fish! I've never had the pleasure of stream fishing for trout, but it is something I would love to do someday. If I ever get far enough north to do it, I'll be out in a stream somewhere with a fly rod!