Pygmy Whitefish
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Name and Code
Family
Salmonidae - trouts and salmons
Species
Prosopium coulterii
Taxonomic Authority
(Eigenmann & Eigenmann, 1892)
Common Name(s)
Pygmy Whitefish
French Name
ménomini pygmée
OMNR Code
101
Family TSN
161931
Parent TSN
162007
Species TSN
162011
Conservation Status
Global Rank (GRank)
G5 (2008-01-15)
National Rank (NRank)
N4N5 (2011-09-14)
Provincial Rank (SRank)
SU (1997-10-10)
COSEWIC Status
Threatened (Nov 2016)
SARO Status
none
AFS Status
none
Ecological Value
Ontario Origin
native
General Abundance
limited distribution
Tolerance
intolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthopelagic
Trophic Class
invertivore
Thermal Regime
coldwater
Habitat Preference
moderately deep waters (18-90 m), usually 46-71 m; preferred water temperature <10°C
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Lithophils
Spawning Habitat(s)
lacustrine; riverine
Spawning Season
fall
Spawning Month(s)
November-December
Spawning Temperature (°C)
0.5-4
Fecundity
93-1,412
Nursery Habitat(s)
lacustrine
Size and Age
Adult Length (cm)
9.1-15.1 TL
Adult Weight (kg)
0.004-0.023
Age at Maturity (yrs)
2 (m); 3 (f)
Maximum Length (cm)
27.1 FL
Maximum Weight (kg)
0.163
Lifespan (yrs)
5-7 (m); 7-9 (f)
Ontario Range Map
Pygmy Whitefish range
Ontario Distribution
Lake Superior
Photograph
Pygmy Whitefish photograph
Notes
* - Great Lakes - Upper St. Lawrence populations; Lake Superior population discovered in 1952 is over 1,600 km outside the normal range (Pacific Northwest)
Ontario Records
Record Length (cm)
14.2 TL
Record Weight (kg)
none
Information Sources
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