microstomus, Salmo Pallas [P. S.] 1814:405 [Zoographia Rosso-Asiatica v. 3; ref. 3351] Lena River below Karenga mouth, Indigirka, Kovyma, Anadyr, Ochota, Kutchtui rivers, Kamtchatka. •In part synonym of Coregonus cylindraceus (Pennant 1784) -- (Berg 1948:417 [ref. 12882]). •In part synonym of Prosopium cylindraceum (Pennant 1784) -- (Reshetnikov 1998:47 [ref. 23570]). Current status: Synonym of Prosopium cylindraceum (Pennant 1784). Salmonidae: Coregoninae. Habitat: freshwater, brackish.