Least Darter
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Name and Code
Family
Percidae - perches and darters
Species
Etheostoma microperca
Taxonomic Authority
Jordan & Gilbert, 1888
Common Name(s)
Least Darter
French Name
petite dard
OMNR Code
340
Family TSN
168356
Parent TSN
168358
Species TSN
168411
Conservation Status
Global Rank (GRank)
G5 (2011-12-21)
National Rank (NRank)
N4 (2000-10-20)
Provincial Rank (SRank)
S4 (1997-10-02)
COSEWIC Status
Not at Risk (Apr 1989)
SARO Status
Not at Risk
AFS Status
none
Ecological Value
Ontario Origin
native
General Abundance
uncommon
Tolerance
intolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthic
Trophic Class
invertivore
Thermal Regime
warmwater
Habitat Preference
among submergent vegetaion in clear lakes, stream marigins and pools of creeks and small rivers with soft sand, mud or organic substrates
Reproduction
Reproductive Guild
Guarders: Substratum choosers: Phytophils
Spawning Habitat(s)
lacustrine; riverine
Spawning Season
spring
Spawning Month(s)
May-June
Spawning Temperature (°C)
13-18
Fecundity
31-1,102
Nursery Habitat(s)
lacustrine; riverine
Size and Age
Adult Length (cm)
2.5-3.8 TL
Adult Weight (kg)
0.0001-0.0004
Age at Maturity (yrs)
1
Maximum Length (cm)
4.6 TL
Maximum Weight (kg)
0.0005
Lifespan (yrs)
1
Ontario Range Map
Least Darter range
Ontario Distribution
southern Ontario tributaries of Lakes Erie, St. Clair, Huron and Ontario (extirpated)
Photograph
Least Darter photograph
Notes
smallest fish in Canada with mature adults 2.2 cm in length; fractional spawner; most adults die shortly after first spawning season
Ontario Records
Record Length (cm)
4.2 TL
Record Weight (kg)
none
Information Sources
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