A catfish's sense of hearing is over 15 times more sensitive than the average fish. Catfish are capable of detecting sound up to 13,000 cycles per second. Their hearing organs, are vastly developed and highly acute. Fishermen must learn to respect a catfish's sense of hearing, because by doing so, they will catch more, bigger fish. There have been plenty of times when I was unsuccessful and can only wonder if it was because of unnecessary noise Ive made while preparing rods and rigs or baiting up. Also I have noticed that most strikes come after a long period of silence or quietness. Some species of catfish are so sensitive to low-frequency vibrations that the Chinese once used them to warn of potential earthquakes. If they can sense changes inside the earth, I'm willing to bet they can hear just about anything you do on the shoreline or in a boat. When targeting flatheads, I like it dark as possible, only using light when needed. My catch rate has increased when I stopped using lights,lanterns or bank side campfires.