1. Season the fish fillets with salt and pepper and coat lightly with flour. Heat the oil in a frying pan and sauté the fish until lightly browned on both sides. Transfer to a platter and keep warm.
2. In the oil remaining in the pan, saute the onion and garlic until soft. Add tomatoes, bay leaf, Cayenne pepper and salt and pepper to taste and sauté, stirring from time to time, until the mixture is thick and well blended. Stir in the wine and bring to a simmer. Add the fish and simmer fort -3 minutes longer. Serve with rice or potatoes.