A lot of years ago in Florida Sportsman magazine I believe, there was a story about a man that found a largemouth flopping around on the surface as he headed out one morning. The fish was ultra skinny and clearly in need of help. He got to feeling around on the fish and felt something hard inside. He looked in the mouth and couldn’t see anything but the object was moving so he did his best to persuade it back out the way it had come in. A few moments later he was able to get ahold of the end of what turned out to be a sizable piece of wood that it had eaten and swallowed , unable to digest or pass. He pulled on it and it came out without much effort and he revived it for a couple of minutes and it swam off on its own. Nothing found in a fishes stomach surprises me since reading of this. My thought was that it struck the wood thinking it was food in low light conditions. That fish was blessed with a Good Samaritan.