Gravel Chub
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Name and Code
Family
Cyprinidae - carps and minnows
Species
Erimystax x-punctatus
Taxonomic Authority
(Hubbs & Crowe, 1956)
Common Name(s)
Gravel Chub
French Name
gravelier
OMNR Code
187
Family TSN
163342
Parent TSN
163819
Species TSN
163824
Conservation Status
Global Rank (GRank)
G4 (2011-12-01)
National Rank (NRank)
NX (2008-05-05)
Provincial Rank (SRank)
SX (2011-05-04)
COSEWIC Status
Extirpated (Apr 2008)
SARO Status
Extirpated
AFS Status
none
Ecological Value
Ontario Origin
native
General Abundance
extirpated
Tolerance
intolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
riverine
Environment
benthic
Trophic Class
invertivore
Thermal Regime
coolwater
Habitat Preference
gravel riffles and runs of clear to moderately turbid creeks and small to large rivers, with substrates free of unconsolidated silts and clays
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Lithophils
Spawning Habitat(s)
riverine
Spawning Season
spring
Spawning Month(s)
April-June
Spawning Temperature (°C)
15-16
Fecundity
500
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
6.4-9.7 TL
Adult Weight (kg)
no data
Age at Maturity (yrs)
1-2
Maximum Length (cm)
10.2 TL
Maximum Weight (kg)
0.015
Lifespan (yrs)
3-4
Ontario Range Map
Gravel Chub range
Ontario Distribution
Thames River (extirpated), last reported in 1958
Photograph
Gravel Chub photograph
Notes
sensitive to high turbidity and siltation; use as live bait prohibited
Ontario Records
Record Length (cm)
9.4 TL
Record Weight (kg)
none
Information Sources
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