halibut

Any of a group of large flatfishes found in the Atlantic and Pacific oceans. The largest of the flatfishes, they may grow up to 2 m/6 ft in length and weigh 90–135 kg/200–300 lb. They are a very dark mottled brown or green above and pure white on the underside. The Atlantic halibut (H. hippoglossus) is caught offshore at depths from 180 m/600 ft to 730 m/2,400 ft. (Genus Hippoglossus, family Pleuronectidae.)