During a discussion with our local DNR fisheries biologist, he made a comment that generally channel cats don't get up to 20 lb in the Mississippi. I find that hard to believe since the Red River in ND has piles of them. I've seen (and caught) quite a few 10-15 lb fish so I find it hard to believe they just stop growing or die off before hitting 20. Does anybody consistently catch big channels on the river? Thoughts?