Deepwater Cisco
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Name and Code
Family
Salmonidae - trouts and salmons
Species
Coregonus johannae
Taxonomic Authority
(Wagner, 1910)
Common Name(s)
Deepwater Cisco
French Name
cisco de profondeur
OMNR Code
095
Family TSN
161931
Parent TSN
161932
Species TSN
161944
Conservation Status
Global Rank (GRank)
GX (2011-11-04)
National Rank (NRank)
NX (1996-12-05)
Provincial Rank (SRank)
SX (1988-10-31)
COSEWIC Status
Extinct (May 2000)
SARO Status
Extinct
AFS Status
Extinct (2,4)
Ecological Value
Ontario Origin
endemic
General Abundance
extinct
Tolerance
intolerant
Economic Importance
commercial fishery (historical)
Habitat and Feeding
General Habitat(s)
lacustrine
Environment
pelagic
Trophic Class
planktivore
Thermal Regime
coldwater
Habitat Preference
clear, cold, deep waters (29-183 m), usually >64 m
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Pelagophils
Spawning Habitat(s)
lacustrine
Spawning Season
summer-fall
Spawning Month(s)
August-September
Spawning Temperature (°C)
no data
Fecundity
no data
Nursery Habitat(s)
lacustrine
Size and Age
Adult Length (cm)
24.3-29.0 TL
Adult Weight (kg)
0.15
Age at Maturity (yrs)
no data
Maximum Length (cm)
39.6 TL
Maximum Weight (kg)
0.68
Lifespan (yrs)
no data
Ontario Range Map
Deepwater Cisco range
Ontario Distribution
formerly occurred in Lake Huron; last reported in 1952
Photograph
Deepwater Cisco photograph
Notes
possible synonym of Coregonus zenithicus
Ontario Records
Record Length (cm)
33.0 TL
Record Weight (kg)
none
Information Sources
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COSEWIC. 2016. Canadian wildlife species at risk. October 2016. Committee on the Status of Endangered Wildlife in Canada. Gatineau, QC. iv + 113 pp.
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Eshenroder, R.L, Vecsei, P., Gorman, O.T., Yule, D.L., Pratt, T.C., Mandrak, N.E., Bunnell, D.B., and Muir, A.M. 2016. Ciscoes (Coregonus, subgenus Leucichthys) of the Laurentian Great Lakes and Lake Nipigon. Great Lakes Fishery Commission Misc Pub. 2016-01. v+140p.
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