Margined Madtom
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Name and Code
Family
Ictaluridae - North American catfishes
Species
Noturus insignis
Taxonomic Authority
(Richardson, 1836)
Common Name(s)
Margined Madtom
French Name
chat-fou liséré
OMNR Code
238
Family TSN
163995
Parent TSN
164002
Species TSN
164004
Conservation Status
Global Rank (GRank)
G5 (2015-10-02)
National Rank (NRank)
N1 (2000-10-20)
Provincial Rank (SRank)
SU (2001-10-29)
COSEWIC Status
Data Deficient (May 2002)
SARO Status
Data Deficient
AFS Status
none
Ecological Value
Ontario Origin
introduced
General Abundance
rare
Tolerance
intermediate
Economic Importance
none
Habitat and Feeding
General Habitat(s)
riverine
Environment
benthic
Trophic Class
invertivore
Thermal Regime
warmwater
Habitat Preference
riffles and runs of clear, fast-flowing creeks and small to medium rivers with cobble, boulder or coarse gravel substrates and lakes
Reproduction
Reproductive Guild
Guarders: Nest spawners: Speleophils
Spawning Habitat(s)
riverine
Spawning Season
summer
Spawning Month(s)
June-July
Spawning Temperature (°C)
20-26
Fecundity
53-446
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
6.4-12.6 TL
Adult Weight (kg)
0.003-0.022
Age at Maturity (yrs)
1-2 (m); 2-3 (f)
Maximum Length (cm)
17.9 TL
Maximum Weight (kg)
0.036
Lifespan (yrs)
4-5
Ontario Range Map
Margined Madtom range
Ontario Distribution
Ottawa River Tributaries (Fall River, Bolton Creek, Mississippi River), Lake Joseph, Lake Muskoka, Lake Rosseau; first reported from Ontario waters in 1976
Photograph
Margined Madtom photograph
Notes
native to eastern United States; likely introduced by bait-bucket transfer, although may be native; sensitive to siltation
Ontario Records
Record Length (cm)
15.9 TL
Record Weight (kg)
none
Information Sources
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