Siberian brook lamprey; Siberian lamprey
A species of lamprey (Lethenteron kessleri) found in Siberia and surrounding regions. Used in biological and ecological contexts.
The Siberian brook lamprey inhabits rivers in Russia.
From シベリア (Siberia) + 八目 (lamprey, literally 'eight eyes', referring to the gill openings). The exact derivation is uncertain, but the name follows the pattern of other lamprey species names in Japanese.