The Latest info on the tagging program. In April 2006, archival tags were surgically implanted into 50 Kamloops adults and 26 steelhead adults; half males and half females. The Kamloops were captured during the spawning season in the French River trap, and the steelhead were captured in the Knife River trap. The three-minute surgical tag implantation procedure was followed by external tagging with two T-bar anchor tags inserted along each side of the dorsal fin. The adipose fin on steelhead was clipped making them legal for anglers to harvest. The fish were held in a tank until they recovered and then were released into Lake Superior. None showed any ill effects from the procedure. Click here for more inforamation from the MN DNR .