I was trotlining this weekend in a place i know holds lots of flatheads and when i run one line i had caught a 3 or 4 lb blue. when i seen him i could see he was almost dead. then after looking it over it was no doubt he had been eaten. apparently head first because his side fins were broke towards the front. I know the whole fish was in the big fishes mouth because even its tail was all frayed red. I know it was a catfish because it had the hide all skint up from its teeth marks and the blue was 18 in. long. How big does anybody think this fish could be and do you think he will stay in the same area. I have been trotling many years and never seen anything like this.