1. In a heavy kettle (at least 5 quarts) cook garlic in oil over moderate heat, stirring until pale golden. 2. Add onion and cook, stirring until softened. 3. Add Pepper Flakes and Bell Pepper and cook, stirring until softened. 4. Add Vinegar and boil until evaporated. 5. Add White Whine, Oregano, and Bay Leaf and simmer 5 minutes. 6. Stir in Tomato Puree and Tomato Paste and bring to a boil. 7. Add Crab Legs and Clams and simmer, covered, 15 to 20 minutes, checking often and transferring Clams as hey open with tongs to a bowl (discard unopened ones). 8. Transfer Crab Legs with tongs to a cutting board and remove shells, adding any crab liquid to soup. Halve or quarter Crab Legs, depending on size, and reserve, with any additional liquid, in a bowl. 9. Add Shrimp, Scallops, and White Fish to soup and simmer, covered, 5 minutes, or until seafood is just cooked through. 10 Stir in gently Crab Leg Meat, their liquid, and Clams and sprinkle with Fresh Parsley.