Place catfish in a shallow baking dish; set aside. Combine Worcestershire sauce, lemon juice, garlic, paprika, pepper, and butter in large bowl; mix well. Pour over catfish and marinate in refrigerator for up to 2 hours.
Preheat grill to 350-400 degrees.
Use large pan, cover with aluminum foil. Fold up sides to form a rim; pour marinade over the catfish. Grill in pan for 20-25 min, flipping at halfway through. Once cooked then transfer to grill for a 1 minute on each side. Take off grill and enjoy!