If you want to keep it simple, just use a little salt and pepper. If you want something more you can season your fish with some salt, lemon pepper and fresh or dried herbs like rosemary, dill or thyme. In addition, garlic and onions also go perfectly with the cold lake fish. If you want to bake your fish with a sauce or marinade, you can use honey, soy sauce, lemon or orange juice or white wine.