ScombridaeScombridae

Scombridae, a family of fast-swimming, pelagic bony fishes, are commonly known as mackerels, tunas, and bonitos. Their sleek, torpedo-shaped body is characterized by a deeply forked caudal fin, a distinct keel on the caudal peduncle, and a series of small finlets behind both the dorsal and anal fins. Most species have a dark metallic blue or green back, fading to silvery sides and belly, often marked with spots, bars, or wavy lines. The family name Scombridae derives from the ancient Greek 'scombros,' referring to mackerel. Sizes vary widely, from mackerels reaching 30 cm (12 in) to tunas exceeding 2 meters (6.6 ft).

They inhabit open water from the surface down to over 200 m (660 ft) depth, frequently encountered by divers near reef drop-offs, pinnacles, and offshore seamounts. These active, schooling predators hunt small schooling fish and cephalopods, relying on their speed and acute vision. Though migratory, they are a common sight in the pelagic zones and along the outer reef walls.