Warmouth
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Name and Code
Family
Centrarchidae - sunfishes
Species
Lepomis gulosus
Taxonomic Authority
(Cuvier, 1829)
Common Name(s)
Warmouth
French Name
crapet sac-à-lait
OMNR Code
323
Family TSN
168093
Parent TSN
168130
Species TSN
168139
Conservation Status
Global Rank (GRank)
G5 (2015-05-19)
National Rank (NRank)
N1 (2015-05-19)
Provincial Rank (SRank)
S1 (1988-11-22)
COSEWIC Status
Endangered (May 2015)
SARO Status
Endangered
AFS Status
none
Ecological Value
Ontario Origin
natural dispersal
General Abundance
rare
Tolerance
intermediate
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthopelagic
Trophic Class
invertivore/carnivore
Thermal Regime
warmwater
Habitat Preference
shallow vegetated waters (<1 m) of lakes, ponds, oxbows and quiet areas of streams with clear water and siltly, sandy, organic substrates
Reproduction
Reproductive Guild
Guarders: Nest spawners: Lithophils
Spawning Habitat(s)
lacustrine; riverine
Spawning Season
summer
Spawning Month(s)
June-August
Spawning Temperature (°C)
21-27
Fecundity
6,825-20,238
Nursery Habitat(s)
lacustrine; riverine
Size and Age
Adult Length (cm)
8.9-22.8 TL
Adult Weight (kg)
0.014-0.27
Age at Maturity (yrs)
2-3
Maximum Length (cm)
33.0 TL
Maximum Weight (kg)
1.11
Lifespan (yrs)
6-9
Ontario Range Map
Warmouth range
Ontario Distribution
Lake Erie (Rondeau Bay, Point Pelee, Long Point Bay, Big Creek); first reported from Ontario waters in 1966
Photograph
Warmouth photograph
Notes
tolerant of low dissolved oxygen; moderately intolerant of turbidity; hybrids with other sunfishes including Pumpkinseed, Bluegill and Rock Bass reported
Ontario Records
Record Length (cm)
30.0 TL
Record Weight (kg)
none
Information Sources
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