For twenty some years I have cleaned fish down by my dock on Lake Norman and I throw the skins, trimmings and carcass into the lake next to the shoreline. If they are perch and eating size catfish they will be gone the next day. If they are striper's, it takes two or three days for them to disappear. I also dump my left over bait at the dock when I come in from a trip. Up until a couple of years ago, I figured a river otter or some musrats were eating them. Then one morning when the lake was down low, I walked down to the dock and saw a big blue feeding and I mean a big blue, it parted the waters when it saw me and you have never seen such a wake created by a fish. As you can see from the attached photo that is a lot of fish for one cat to eat, but right now, there are only two striper's laying on the bottom. My wife is always kidding me about Moby Dick and says I should go down there and catch it. With all the poles and brush down thar, I would never get it out. Plus, what fun would it be to catch something you have been feeding for so long. Now, if it was out in the cove in open waters, I would not mind playing with it for a spell. Of course I would release it.