Paddlefish
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Name and Code
Family
Polyodontidae - paddlefishes
Species
Polyodon spathula
Taxonomic Authority
(Walbaum, 1792)
Common Name(s)
Paddlefish
French Name
spatulaire
OMNR Code
021
Family TSN
161086
Parent TSN
161087
Species TSN
161088
Conservation Status
Global Rank (GRank)
G4 (2012-08-07)
National Rank (NRank)
NX (2008-05-05)
Provincial Rank (SRank)
SX (1988-11-22)
COSEWIC Status
Extirpated (Apr 2008)
SARO Status
Extirpated
AFS Status
Vulnerable (1,2)
Ecological Value
Ontario Origin
native
General Abundance
extirpated
Tolerance
intolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
pelagic
Trophic Class
invertivore/planktivore
Thermal Regime
warmwater
Habitat Preference
quiet, slow-flowing, often silty, open waters of large rivers and floodplain lakes
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Litho-pelagophils
Spawning Habitat(s)
riverine
Spawning Season
spring
Spawning Month(s)
April-June
Spawning Temperature (°C)
12-18
Fecundity
82,300-608,650
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
89.0-150.5 TL
Adult Weight (kg)
2.5-15.6
Age at Maturity (yrs)
7-10 (m); 14-17 (f)
Maximum Length (cm)
223.5 TL
Maximum Weight (kg)
83.5
Lifespan (yrs)
16 (m); 26 (f)
Ontario Range Map
Paddlefish range
Ontario Distribution
formerly occurred in Lake Huron, Lake Erie, Spanish River and Nipigon River (Lake Helen); last reported from Ontario in 1917
Photograph
Paddlefish photograph
Notes
female spawning interval of 4-7 years
Ontario Records
Record Length (cm)
none
Record Weight (kg)
none
Information Sources
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COSEWIC. 2008. COSEWIC assessment and update status report on the Paddlefish Polydon spathula in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 20 pp.
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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