Kinsley decided I want a gulper catfish.. or 2 but iv seen a couple threads on here a out them not eating when you first get them, the last thing I want to do is have a $90 fish die, I saw a vid on youtube of a guy force feeding his.. is this recommended if it won't eat? Also feeding them, could I literally go to a grocery store and buy like a bag of shrimp for hI'm and just keep him the same stuff we eat?