The OPAH, also known as the Moonfish, is a large soft-finned deep-sea fish that can be found in tropical and temperate waters around the world. It has an oval-shaped body and can grow up to 2 meters in length and weigh up to 200 kilograms. Its scales are iridescent and its fins are large and fleshy. The OPAH is an important food source for many cultures and is highly sought after for its delicious flavor.