River Redhorse
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Name and Code
Family
Catostomidae - suckers
Species
Moxostoma carinatum
Taxonomic Authority
(Cope 1870)
Common Name(s)
River Redhorse
French Name
chevalier de rivière
Species Code
173
Family TSN
163892
Parent TSN
163927
Species TSN
163936
Conservation Status
Global Rank (GRank)
G4 (1996-04-26)
National Rank (NRank)
N2N3 (2016-02-10)
Provincial Rank (SRank)
S2 (1989-03-14)
COSEWIC Status
Special Concern (Nov 2015)
SARO Status
Special Concern (2016)
AFS Status
none
Status Notes
none
Ecological Value
Ontario Origin
native
General Abundance
rare
Tolerance
intolerant
Economic Importance
none
Length-Weight Regression Coefficents
Intercept (a)
-4.275
Slope (b)
2.769
Length Basis
TL
Habitat and Feeding
General Habitat(s)
riverine
Environment
benthic
Trophic Class
invertivore
Thermal Regime
coolwater
Habitat Preference
pools and swift runs of medium to large rivers with gravel, cobble, boulder or bedrock substrates
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Lithophils
Spawning Habitat(s)
riverine
Spawning Season
spring
Spawning Month(s)
May-June
Spawning Temperature (°C)
15.5-24.5
Fecundity
6,078-42,630
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
33.0-63.5 TL
Adult Weight (kg)
0.4-2.8
Age at Maturity (yrs)
5-7
Maximum Length (cm)
81.3 TL
Maximum Weight (kg)
7.94
Lifespan (yrs)
16-28
Ontario Records
Record Length (cm)
81.3 TL
Record Weight (kg)
5.82
Ontario Range Map
River Redhorse range
Ontario Distribution
Mississippi River, Ottawa River, Madawaska River, Grand River, Trent River, Thames River, Ausable River (extirpated)
Photographs
River Redhorse photograph
River Redhorse photograph
Notes
intolerant of high turbidity, siltation and pollution; use as bait prohibited
Information Sources
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