Coregonus johannae


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Coregonus johannae
Species Authority: (Wagner, 1910)
Common Name(s):
English Deepwater Cisco

Assessment Information [top]

Red List Category & Criteria: Extinct ver 2.3
Year Published: 1996
Date Assessed: 1996-08-01
Needs updating
Assessor(s): World Conservation Monitoring Centre

Geographic Range [top]

Range Description: This species formerly occurred in Lakes Huron and Michigan in the Great Lakes basin.
Regionally extinct:
Canada; United States
Range Map: Click here to open the map viewer and explore range.

Habitat and Ecology [top]

Habitat and Ecology: Coregonus johannae was a demersal, freshwater species inhabiting the deeper portions of the lakes.
Systems: Freshwater

Threats [top]

Major Threat(s): Commercial exploitation and predation by the Sea Lamprey were the main causes of the extinction of the Deepwater Cisco.

Citation: World Conservation Monitoring Centre 1996. Coregonus johannae. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 02 September 2015.
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