Tomato Poached Fish with Orange and Fennel

Name: Tomato Poached Fish with Orange and Fennel
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: American, Italian
Ingredients: 1/2 orange (preferably cara cara; navel works too); 2 tablespoons extra-virgin olive oil; 1/4 teaspoon red pepper flakes; 3/4 teaspoon fennel seeds; 1 shallot (thinly sliced); 2 garlic cloves (thinly sliced); Salt and black pepper; 3 tablespoons tomato paste; 1/4 cup dry white wine (such as chardonnay, pinot grigio, or sauvignon blanc); 1 teaspoon fish sauce (optional); 1 1/2 cups water; 2 tablespoons unsalted butter; 3/4 pound cod, halibut, or another firm white fish (ideally about 1/3-inch to 1/2-inch thick; cut into 3-inch pieces); 2 tablespoons full-fat skyr, greek yogurt, or creme fraiche (for serving); A handful of flat-leaf parsley (finely chopped); Crusty bread (for serving)