Welcome to the forum, and to the beautiful state of Colorado!
The search button on the toolbar on the side of your screen comes in very handy! Type in something like "trout" or "bluegill" and see what pops up.
Trout are stocked by the millions, so you shouldn't have trouble finding those. You can also look up the CPW stocking reports for lakes around your area and see what's been put in.
Little hint here, google earth your location, zoom out until you see a good body of water, then do a forum search for that lake's name. You'll get some good info.