Goldfish
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Name and Code
Family
Cyprinidae - carps and minnows
Species
Carassius auratus
Taxonomic Authority
(Linnaeus, 1758)
Common Name(s)
Goldfish
French Name
carassin
OMNR Code
181
Family TSN
163342
Parent TSN
163349
Species TSN
163350
Conservation Status
Global Rank (GRank)
G5 (1996-09-13)
National Rank (NRank)
NNA (1996-12-05)
Provincial Rank (SRank)
SNA (1988-11-22)
COSEWIC Status
none
SARO Status
none
AFS Status
none
Ecological Value
Ontario Origin
introduced
General Abundance
common
Tolerance
tolerant
Economic Importance
invasive species
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthopelagic
Trophic Class
invertivore/herbivore
Thermal Regime
warmwater
Habitat Preference
shallow, pools and backwaters of sluggish rivers, ponds and lakes with dense aquatic vegetation; preferred water temperature 27.9°C
Reproduction
Reproductive Guild
Nonguarders: Open substratum spawners: Phytophils
Spawning Habitat(s)
lacustrine; riverine
Spawning Season
spring-summer
Spawning Month(s)
May-July
Spawning Temperature (°C)
16-25
Fecundity
300-403,000
Nursery Habitat(s)
lacustrine; riverine
Size and Age
Adult Length (cm)
21.0-40.6 TL
Adult Weight (kg)
0.26-1.16
Age at Maturity (yrs)
2-3 (m); 3-4 (f)
Maximum Length (cm)
58.4 TL
Maximum Weight (kg)
4.25
Lifespan (yrs)
6-7
Ontario Range Map
Goldfish range
Ontario Distribution
St. Clair River, Lake St. Clair and tributaries, Detroit River, Lake Erie and tributaries, Niagara River, western Lake Ontario and tributaries, Thunder Bay (Lake Superior), Gillies Lake (Timmins)
Photograph
Goldfish photograph
Notes
indigenous to eastern Asia; introduced by release of aquarium stock; hybridize readily with Common Carp; tolerant of high water temperature (41°C), turbidity and low dissolved oxygen; use as live bait prohibited
Ontario Records
Record Length (cm)
39.3 TL
Record Weight (kg)
none
Information Sources
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