Preheat oven to 350° F.
Roll haddock into small rolls and place seam side down in an ungreased baking dish. Sprinkle with salt and pepper.
In a bowl, blend together sour cream, Parmesan cheese, paprika and tarragon. Spread over the fish and bake 20 minutes, or until the fish flakes easily. Top with green onions and tomato.Servings: 4