Fly fisherman releases cutthroat trout into a high mountain lake with very clear water

oncorhynchus clarkii fish aquatic underwater cutthroat trout freshwater trout gill catch and release swim angling flyfishing fly fishing fly fisherman wildlife endangered species stream angler ecosystem habitat animal water fishing ecology catch release cutthroat river background fisherman nymph rod fly native wild serene recreation nature lake creek peaceful wilderness westslope montana hook colorful cold sport net