Northern Madtom
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Name and Code
Family
Ictaluridae - North American catfishes
Species
Noturus stigmosus
Taxonomic Authority
Taylor, 1969
Common Name(s)
Northern Madtom
French Name
chat-fou du nord
OMNR Code
244
Family TSN
163995
Parent TSN
164002
Species TSN
164025
Conservation Status
Global Rank (GRank)
G3 (2012-07-31)
National Rank (NRank)
N1 (2011-09-09)
Provincial Rank (SRank)
S1 (2007-11-09)
COSEWIC Status
Endangered (May 2012)
SARO Status
Endangered
AFS Status
Vulnerable (1)
Ecological Value
Ontario Origin
natural dispersal
General Abundance
rare
Tolerance
intolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
riverine
Environment
benthic
Trophic Class
invertivore
Thermal Regime
warmwater
Habitat Preference
riffles and runs in small to large rivers with clear to turbid waters and moderate to swift current over sand to rock substrate
Reproduction
Reproductive Guild
Guarders: Nest spawners: Speleophils
Spawning Habitat(s)
riverine
Spawning Season
summer
Spawning Month(s)
July-August
Spawning Temperature (°C)
23-25
Fecundity
61-223
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
7.5-13.5 TL
Adult Weight (kg)
0.005-0.027
Age at Maturity (yrs)
2
Maximum Length (cm)
15.0 TL
Maximum Weight (kg)
0.03
Lifespan (yrs)
3-6
Ontario Range Map
Northern Madtom range
Ontario Distribution
Detroit River, Lake St. Clair, St. Clair River, Thames River, Sydenham River (extirpated); first collected from Ontario waters of Lake St. Clair in 1963
Photograph
Northern Madtom photograph
Notes
sensitive to pollution and siltation
Ontario Records
Record Length (cm)
13.2 TL
Record Weight (kg)
none
Information Sources
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COSEWIC. 2012. COSEWIC assessment and status report on the Northern Madtom Noturus stigmosus in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. x + 38 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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