Dusky sole lives in the vicinity of Hokkaido, the Pacific Ocean to the north of Miyagi Prefecture, and the coast to the north of Fukui Prefecture, Japan. The eyes are on the right side. Higher body height and smaller mouth than other right-eye flounders.
The Y-shaped lateral line near the eyes that easily distinguishable from other flatfish species. The female's ovary before oviposition is large and palatable when it boiled. Small fishes would be good for fried.