Creamy Norwegian Fish Soup Recipe

Name: Creamy Norwegian Fish Soup Recipe
Ingredients: 2 1/2 tbsp butter; 2 1/2 tbsp plain flour; 4 -5 cups fish stock; 1 medium carrot, finely chopped in strips; 1 -2 cup leek, finely chopped in strips; 1 -2 potato, peeled and cut into small cubes (optional); 1 (14 oz) can chopped tomatoes (optional); 12 peeled raw shrimp (approx ); 12 mussels (approx; 4 -6 oz catfish; 1/2 cup heavy cream; 1/4 cup chopped fresh parsley; salt and pepper; 2 tbsp sour cream (optional); 2 tsp lumpfish caviar (optional)