In a large pot, simmer the wine, broth, orange juice, garlic, saffron, fennel, onions, tomatoes, zest, black pepper and bay leaves for 15 minutes.
Add the carrots, celery and potatoes and simmer for 10 minutes.
Add the raw fish and shellfish and simmer for 3 minutes, add the cooked shellfish and simmer for 2 minutes.
Serve with fresh bread, garlic bread or croutons.
Notes
The traditional stew is mostly the meat of the fish and shellfish with a little broth. I like a lot of broth and I add vegetables for a "one pot" meal.