Opah (Moonfish)

An opah has four types of flesh, each a different color. Behind the head and along the backbone is an orangish flesh. Toward the belly, the flesh pales to a pink color and is somewhat stringy. The fish's cheeks yield dark red flesh. These types of flesh all cook to a white color. Inside the fish's breastplate is another, smaller section of flesh, comprising a very small percentage of a 100-pound moonfish. A bright ruby red or liver color, this flesh cooks to a brown color and is somewhat stringy and difficult to fillet.