Cooking fish is a doddle in this low-calorie Sicilian dish, with its bright colours and sweet-and-sour flavours. It is over 500 calories so be careful to pair it with a lower calorie breakfast and lunch on a diet day so your calories don't exceed 1200â1500. Each serving provides 550 kcal, 34g protein, 74.5g carbohydrates (of which 34.5g sugars), 9g fat (of which 1.5g saturates), 15.5g fibre and 0.7g salt.