Heat a deep skillet or dutch oven over medium-high heat. Add Olive Oil, Garlic, Onion, Fennel, and Pepper Flakes to the pan. Season with ½ teaspoon salt. Cook, stirring often, for about 5 minutes, or until the vegetables are soft and fragrant.
Add in Wine to deglaze the bottom of the pan. Simmer until reduced by half, about 2 minutes.
Add the Tomatoes, Broth, and Capers. Reduce the heat to medium low and simmer for 10 minutes.
Season the Fish with the remaining Salt. Gently add the Fish into the broth and cover with a tight-fitting lid. Cook for 12 minutes, or until the fish is firm and opaque all the way through.
Remove the lid and spoon some of the sauce over the Fish. Sprinkle with Parsley, drizzle with Olive Oil and serve with Crusty Bread.