Preheat the oven to 180C/gas 4. Place the fish, carrot, onion, tomato, garlic and bay leaves in a baking dish. Season generously with sea salt and ground black pepper, then drizzle over the oil. Sprinkle over the parsley and add the wine, lemon juice and a little water.
Bake for 30 minutes or until the fish and veg are cooked and the sauce has thickened. Serve lukewarm or cold with an extra squeeze of lemon.