To prepare a the postman italian fish soup soups recipe, first you will need to gather your ingredients. First, you'll need the following ingredients: 1 pound frozen halibut fillets, skin on, with the bones in the shell. 2 lbs diced red bell pepper, finely chopped. 1 cup chopped thyme, sage, oregano, basil, salt, and pepper to taste. 3 tablespoons olive oil. 4 cups water. Bring to boil. Reduce the heat to medium-low and simmer until the vegetables are tender, about 30 minutes. Remove from heat and stir in 2 cups chopped parsley. Taste the soup and adjust seasonings as necessary. Serve immediately.