Wow! People actually catch fish with their bare hands!?! Am I in bizarro world?
It's also called noodling. I did some searching and found this page. An excerpt:
To begin, a noodler goes underwater to depths ranging from only a few feet to up to twenty feet. Placing his hand inside a discovered catfish hole, a noodler uses his arm as bait to entice the fish. If all goes as planned, the catfish will swim forward and latch onto the fisherman's hand and arm.Holy shit!
From here most noodlers have 'spotters' who help them bring the catfish in, either to shore or to their boat. The first order of business after catching a catfish is to get them unstuck. When a catfish bites onto a noodler it holds on for quite a while, believing it has caught some food. With gills and teeth scraping and cutting into the fisherman's skin, the spotters helps to secure the fish by other means and then proceed to ease the catfish's grip off of the noodler's arm.
Here's an action shot I found on a film documentary site: