Old Lake Cottage
Deepwater Cisco fishing in Canada
Coregonus johannae
- Documented at
- 2 waters
- Primary species at
- 0 waters
- Ideal water temp
- 9°C
- Active range
- 4–15°C
Best deepwater cisco waters today
Scored for 2026-09-15 from live weather, water temperature and this species’ own thermal range.
How to fish for deepwater cisco
Deepwater cisco (Coregonus johannae) were a large deepwater cisco of Lakes Huron and Michigan, driven to extinction by the mid-twentieth century through overfishing and the impacts of invasive species - they no longer exist anywhere and cannot be caught. They're included here for historical and record-keeping completeness only. In life they were a deep, cold-water, plankton-feeding coregonine and an important forage fish; their loss is part of the well-documented collapse of the Great Lakes' native deepwater cisco community. Any modern record under this name reflects historical data or the misidentification of a surviving cisco relative.