Coregonus gutturosus was a deep water whitefish that reached a length of 29 cm (11 in). Coregonus gutturosus was highly sensitive to environmental changes and it is thought that the eutrophication of Lake Constance, which peaked in 1979, irreversibly affected the development of the eggs of the species.
Surveys undertaken in the last ten years failed to find any evidence of the survival of the Lake Constance whitefish.
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