Follow these simple steps to create your Southern Fried Catfish:

1. Marinate Fish: Place the catfish fillets in a bowl and cover them with buttermilk. Allow them to marinate for at least 15 minutes. This helps tenderize the fish and adds flavor.
2. Prepare the Coating: In a shallow dish, combine the cornmeal, flour, salt, black pepper, paprika, and cayenne pepper (if using). Mix well until evenly combined.
3. Heat Oil: In a large skillet, pour enough vegetable oil to cover the bottom, about 1/4 inch deep. Heat the oil over medium-high heat until it reaches 350°F (175°C).
4. Coat the Fish: Remove the catfish fillets from the buttermilk, allowing excess to drip off. Dredge each fillet in the cornmeal mixture, ensuring an even coating.
5. Fry the Fish: Carefully place the coated catfish fillets in the hot oil. Fry for about 4-5 minutes on each side or until golden brown and cooked through. Avoid overcrowding the pan; fry in batches if necessary.
6. Drain Excess Oil: Once cooked, remove the fillets from the skillet and place them on a plate lined with paper towels to absorb excess oil.
7. Serve: Serve the Southern Fried Catfish hot, garnished with lemon wedges and hot sauce on the side, if desired.

These steps will guide you in creating a dish that is not only delicious but also easy to prepare.