Cannot find any info on the MDC website about this, but I got this from another Missouri fishing web site. "I work for M.D.C. and we have started tagging catfish again this year. We will tag 100 with $150 tags and 300 with $25 tags. We will be tagging flatheads and blues over 15" from hannibal to north of canton mo, on the mississippi river.In addtion to these fish we have tagged over 2,000 fish with $25 dollar tags over the last few years. Good luck."