Lay out parchment paper and distribute sliced fennel evenly in the center of each paper. Sprinkle with a small amount of caper mix. Place 1 fish fillet on top, spoon on remaining caper mix and top each with 2 lemon slices. Gather paper together in center. Fold and roll to secure.
Twist ends securely to seal.
Packets will be slightly browned and puffed. Slide packets onto dinner plates with long spatula and let guest be surprised by the drama of opening the delectable fish en papillote. Couscous Couscous is made from semolina, the same type of durum wheat flour used to make pasta. Whole wheat couscous lends a rich, nutty flavor and is available at most health food stores. Pour 2 cups boiling water over couscous.