Tadpole Madtom
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Name and Code
Family
Ictaluridae - North American catfishes
Species
Noturus gyrinus
Taxonomic Authority
(Mitchill, 1817)
Common Name(s)
Tadpole Madtom
French Name
chat-fou brun
OMNR Code
236
Family TSN
163995
Parent TSN
164002
Species TSN
164003
Conservation Status
Global Rank (GRank)
G5 (2015-08-18)
National Rank (NRank)
N5 (2015-08-18)
Provincial Rank (SRank)
S4 (1988-11-22)
COSEWIC Status
none
SARO Status
none
AFS Status
none
Ecological Value
Ontario Origin
native
General Abundance
uncommon
Tolerance
intermediate
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthic
Trophic Class
invertivore/planktivore
Thermal Regime
warmwater
Habitat Preference
quiet, slow moving, pools and backwaters of creeks and small to large rivers, and clear waters of shallow lakes, ponds, and stream mouths, with soft, muddy substrates and extensive vegetation
Reproduction
Reproductive Guild
Guarders: Nest spawners: Speleophils
Spawning Habitat(s)
riverine
Spawning Season
summer
Spawning Month(s)
June-July
Spawning Temperature (°C)
20-25
Fecundity
43-529
Nursery Habitat(s)
lacustrine; riverine
Size and Age
Adult Length (cm)
5.9-10.1 TL
Adult Weight (kg)
0.003-0.015
Age at Maturity (yrs)
1-2
Maximum Length (cm)
13.7 TL
Maximum Weight (kg)
no data
Lifespan (yrs)
3-4
Ontario Range Map
Tadpole Madtom range
Ontario Distribution
southern and northwestern Ontario
Photograph
Tadpole Madtom photograph
Notes
sensitive to siltation; moderately intolerant of turbidity; nocturnal behaviour; hybrids with Brindled Madtom reported
Ontario Records
Record Length (cm)
11.7 TL
Record Weight (kg)
none
Information Sources
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