This just flat out has no basis in reality. They are not bottom feeders, they are filter feeders... as such, they feed by straining very small organisms, NOT by feeding off the bottom. They are not a type of catfish any more than "mud puppies" are a type of dog. They are close cousins to the Sturgeons, but they are in no way related to catfish other than being... well... fish.They are bottom feeders, put some chicken liver on the hook first, or some pre made catfish bait. They are a type of catfish. As someone mentioned, his Grandfather used to call them spoonbilled catfish, they are spoonbilled catfish, also known as a paddle fish.
If you use chicken liver, run the hook through it several times, and dont throw too hard, or your bait will end up in a different place than your hook.