Also known as redfish, rosefish, or Norway haddock, the ocean perch is in fact not related to the perch family, though it resembles the perch. It actually belongs to the scorpion fish family, Scorpaenidae, and the most common species, Sebastes marinus, is among the leading food fish.
The ocean perch is a vivid orange or red, with paler underparts, a large mouth, and large black eyes. It is one of the few commercial fishes that bear live young. The young are spawned in the spring or early summer and grow slowly until their 11th year, when they reach their maximum size of about 40 inches (1 meter). The average weight is three fourths of a pound (0.3 kilogram).
Ocean perch are found in the North Atlantic along European and North American coasts. They prefer rocky bottom terrain at depths ranging from 320 to 2,000 feet (100 to 600 meters). An unusual subspecies, Sebastes marinus mentellus, often lives at depths below 2,000 feet. The two varieties breed together only where their zones of distributions overlap (between 650 and 990 feet, or 200 to 300 meters), where transitional forms of the fishes have been seen.