This is a bistro dish if there ever was one. The fennel black peppercorn crust goes great with swordfish and carrots go great with fennel. It is a win, win in my mind. The thing I know about swordfish is the closer the steak is to the belly the more fat it will have, hence the better the flavor and less sinew. The other thing is it is a steak so you have to treat it like one, and I am not talking about temperature, but letting it rest so it relaxes and becomes tender. Then you reheat it and finish cooking it.