Serve with a spoonful of tartar sauce and a lemon wedge on the side of each plate.
On a baking sheet, mix together cornmeal, paprika, cumin, cayenne, 1 teaspoon salt, and 1/8 teaspoon pepper. Dredge fish in cornmeal mixture, turning to coat both sides.
In a large nonstick skillet, heat 1 teaspoon oil over medium heat. Place 2 catfish fillets in the skillet, skin side up. Cook until crust is browned and fish is firm, 6 to 8 minutes on each side. If crust is starting to turn too brown, reduce heat. Transfer fish to a plate; keep warm. Wipe out skillet with a paper towel. Repeat with remaining oil and fish.
Incorporating spices into a cornmeal crust is an easy way to add more flavor to fish; the coating would also be good on chicken cutlets.