I have cut the fins & tail off small BG & LMB for a few yrs now.My thinking is a little different than esshup's.A wounded fish doesn't require a bigger LMB to expend anywhere near the energy toeat it,thus its a bonus meal.And yes,I have caught them up to a week later in my pond.It's rare,though.My pond was shocked a few weeks ago,but no fin cut fish were present.I cut bass up to 8" & BG up to 6".Hopefully, I have bass big enough to eat them; if not my channel cats might.