The peacock flounder can be found on the sandy beds of lagoons and the outer slopes of reefs, at the shoreline and up to 80 m below the surface.
They chiefly hunt at night, on the lookout for fish, crabs and shrimp.
Like all flatfish, the young peacock flounder undergoes a transformation during which an eye moves to the other side. The fish then rests on its ‘blind’ side. The upward facing side (with the eyes) is pigmented while the opposite side is white. Flounder can change their colour to blend in with the surrounding environment.