2 tablespoons good olive oil
1 cup chopped yellow onions
2 ounces pancetta or bacon, diced
1 tablespoon chopped garlic
1 (28-ounce) can plum tomatoes, drained and diced
1 teaspoon saffron threads
1 teaspoon kosher salt
1/2 teaspoon freshly ground black pepper
1/2 cup dry white wine
1/4 cup Pernod, optional
1 (2 to 3-pound) striped bass fillet, skin removed
1 pound large shrimp, shelled and deveined
24 mussels, cleaned and debearded
2 tablespoons chopped fresh flat-leaf parsley