Ocean SunfishesMolidae

Ocean sunfishes (Molidae) are large, distinctively truncated bony fishes with a highly compressed, disk-shaped body. The family name Molidae derives from the Latin 'mola', meaning millstone, referring to their flattened, circular shape. Their robust, dense, rough skin is typically greyish-brown to silvery-white, sometimes with mottled patterns. Members include the largest known bony fish, recorded up to 4.6 m (15 ft) in length and 2,744 kg (6,049 lb) in mass. They lack caudal bones and a swim bladder, possessing the fewest vertebrae among fishes (as few as 16 in some species), with much of their skeleton composed of cartilage. Locomotion is primarily achieved by sculling with their tall dorsal and anal fins, while small pectoral fins act as stabilizers. Their beak-like, fused teeth prevent them from fully closing their mouths.

Found in open ocean waters, sunfishes are often observed near the surface but descend to deeper pelagic zones. They consume soft-bodied prey such as jellyfish and salps, with occasional small fish or crustaceans. Prone to skin parasites, sunfishes seek cleaner fish on reefs by adopting a vertical posture near the surface, or breach the water to allow seabirds to remove parasites. Sightings in the 🌊 Red Sea are infrequent.