I have a nice piece of swordfish I picked up from Whole Foods last week in the freezer. I am, however, at a loss as to how to cook it. How long should I marinate it for? I want to prepare it in the oven, but am not sure at what temp, for how long, etc. I'm a relative newb to cooking fish but am trying to eat much healthier. Thank you so much in advance for your help!