Challenge: The chefs made dishes showcasing a fresh Hawaiian fish. They had an hour to prepare their dishes, which were tasted blind by Tom Colicchio, Emeril Lagasse, and the three finalists (Nicholas, Nina, Shirley). Carlos: Mahi Mahi with Mole Manchamanteles & Taro Root Louis: Braised Yellowfin Tuna with Mushrooms, Kale & Cabbage