Cover the top of the fish with a second piece of parchment paper or wrap them tightly with aluminum foil. This will prevent the fish from drying out in the oven, allowing them to cook in steam and stay juicier. Bake in the preheated 180 degree oven for about
30-35 minutes. During the last
5 minutes of the cooking time, you can remove the cover to allow the fish to brown slightly.