Snapper with juice

25 kalamata olives , rinsed, pitted and roughly chopped 2 1/2 teaspoons capers , rinsed 2 1/2 tablespoons red onions , finely diced 8 plum tomatoes , cut into[...]

6 red snapper fillets , boneless and skinless 2 garlic cloves , crushed 3 ounces olive oil 1/3 lb onion , diced 1/3 lb celery , diced 1/3 lb mushroom ,[...]