Geographic distribution of Lethenteron reissneri and material identified by Berg (1931) as L. reissneri without posterials. Approximate location of the type locality of L. reissneri, Amur River basin, Russia (solid star), topotypic localities in Russia and Mongolia (solid diamonds) and localities of material identified by Berg (1931) as L. reissneri: Shangshi River, Amur River basin, People’s Republic of China (solid diamond), Sedanka River, Sea of Japan basin, Russia (solid square), and Samarga River, Sea of Japan basin, Russia (solid square). The Sedanka and Samarga River specimens were re-identified as L. camtschaticum.