Arrange thinly sliced onions on top of the fish and sprinkle chopped parsley over all.
Drain the diced tomatoes and scatter them over the fish, onions, and parsley.
Place the baking dish on the middle oven rack and bake for 30 minutes, or until the fish is tender, basting occasionally with pan juices.
Notes / Tips / Wine Advice:
Wine Advice:Pair this flavorful Greek Baked Fish with a light and crisp Assyrtiko or a Pinot Grigio. The wine's acidity and citrus notes will complement the delicate flavors of the fish, creating a delightful dining experience. Cheers!