Coregonus albellus is endemic to Switzerland where it is native to two lakes,
Lake Brienz and Lake Thun in
Berne, although the species has become established in a third lake,
Lake Biel, also in Berne, probably migrating along the man-made
Aare-Hagneck Canal. The autumn brienzlig is found in deep perialpine
oligotrophic lakes which it shares with seven other species of whitefish. This species appears to be found in both benthic and pelagic zones of the lakes it lives in, being found at depths between , sometimes as deep as . ==Biology==