In a bowl combine the cornmeal, flour, salt, cayenne pepper, and garlic powder. Pour mixture onto a pie plate. Coat the catfish fillets with mixture, shaking off excess.

Fill a 12 inch skillet half full with vegetable oil and heat it to 350 degrees. Add fillets to oil and fry until golden brown, about 5 to 6 minutes.

Put the fillets on serving plates, add a spoonful of tartar sauce, and serve.