Creole Fish Soup

1 can (28 ounces) diced tomatoes, undrained
1 can (15 ounces) tomato sauce
1/2 cup chopped onion
1/2 teaspoon garlic powder
1/2 teaspoon celery salt
1/4 teaspoon dried thyme
1/8 to 1/4 teaspoon cayenne pepper
2 bay leaves
1 package (16 ounces) frozen mixed vegetables
1 pound fresh or frozen cod, cut into 3/4-inch pieces

In a soup kettle, combine the first eight ingredients; cover and simmer for 10 minutes. Add vegetables; cover and simmer for 10 minutes. Add fish; cover and simmer for 8-10 minutes or until the fish flakes easily with a fork. Discard the bay leaves. Makes 8 servings (2 quarts).