My son, Ben, who has caught and released countless keepers this year up to 50 inches, shows the correct way to release a tired fish. You want to ease the fish into the water. Once in the water, grab its tail and move the fish forward and back. This will get oxygen into its gills. When holding the fish, you will feel the fish start to swim on its own. At this point, the fish usually gives a mighty swish of its tail to let you know it's ready to go. Release it and enjoy the sight of your prize swimming off.