This literally takes minutes in the oven. Tilapia (an inexpensive fish, but you can add some great flavor to it), fresh grapefruit and dill make this dish absolutely wonderful. Serve this with some oven fries or fingerling potatoes and some fresh oven roasted zucchini planks, just with olive oil and fresh herbs is perfect. A light fresh dinner. For those who love the light tart taste of grapefruit this is for you. I prefer a nice ruby red grapefruit for this, but a white grapefruit will work fine, it will just be a bit more tart.