Rinse fish and pat dry with a paper towel. Sprinkle lemon juice over fish and refrigerate 10 minutes. Combine Parmesan cheese, margarine, mayonnaise, scallions, salt and hot pepper sauce. Place fish on a steel plate or baking dish. Spread sauce evenly over fish, then sprinkle with paprika. Bake at 425 to 450 degrees for 10 minutes or until fish flakes. Serves 2.