"Periodically a cod with a deformed skull is found; the skull has a distinct top or crown giving it the name "king cod" or kongetorsk in Norwegian. In Norway this rare fish was earlier considered to be able to forecast the weather and was commonly used for that purpose. A woolen thread suspended the fish from the ceiling; its nose would point in a different direction depending on the coming weather. In reality, the thread rather than the fish caused the movement. The twisted thread served as a primitive hygrometer by reacting to the air's humidity, turning the fish as the humidity rose and fell."