한강·임진강·금강의 중류 및 상류에 넓게 분포하였지만, 현재는 서식지가 감소한 것으로 보고되어 있다.
Even though it was widely distributed in the middle and upper streams of the Hangang River, the Imjingang River, and the Geumgang River, it is currently reported that the habitat has decreased.