Have only done this once before but here is my Texas friends reciepe for Catfish.

* Washed in water then rolled in paper towels making sure all moisture was absorbed. Cut into 1 1/2" to 2" chuncks layering in paper towels again. They should be dry, retoweled 3 times

Mix batter ingredients together then dip your fish. I like my oil to be 350 degrees.