Well I grew up in Northern Wis. and my experience with either of these fish are their mouth gape doesn't matter!
LOL! They will kill stuff that they can't eat all the way too! They are like sharks they'll just take a chunk out of it and come back for more!
I once saw first hand a M/or a NP not sure which try to take down a full adult Mallard. It tried 4 times and finally I never saw the duck again. So if you have duck issues too they will help! ha,ha...
But none of these fish got anything on a Red Ear!! So stock at your own risk!
RC