25874 Lethenteron kessleri (Anikin, 1905) Petromyzontidae Northern lampreys Lampetrinae Petromyzontiformes Petromyzonti Siberian brook lamprey Asia: Throughout Siberia to the Anadyr and Sakhalin (Ref. 26334). Specimens identified as <i>Lethenteron kessleri</i> from the Arctic basin refer to <i>Lethenteron reissneri</i> (Ref. 59043).