Rock Sole (Lepidopsetta bilineata) is a flatfish from the family of Pleuronectidae. It is a groundfish and found in the temperate waters in the Baja California, Alaska to the Northern Pacific.
Earlier, the fish was considered single genus until 2000 when the genus was further categorized into three taxa.
The Rock Sole is a dark coloured fish and is seen in several colours such as grey, dark brown, olive with small spots.
The fish is highly commercialized in the waters of the United States and Alaska is renowned to catch the maximum Rock Sole fishes. In 2008, more than 52,000 tons of Rock Sole fishes were in Alaska.