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Northern Pearl Dace

Margariscus margarita

General Status Rank:

Secure

ELCODE:

AFCJB54010

Common Name:

Northern Pearl Dace

Scientific Name:

Margariscus margarita

Naming References:

Google image search

Taxonomy

Group:

Fish

Kingdom:

Animalia

Phylum:

Chordata

Class:

Actinopterygii

Order:

Cypriniformes

Family:

Cyprinidae

References:

General Biology

Female Age at Maturity

1 year

References:

Longevity

3 years

References:

Habitat

adults = cool, clear headwater streams, bog drainage streams, ponds and small lakes spawning = in shallow, moderately flowing current over sand or gravel

References:

Distribution

Ecozones

Taiga Cordillera, Taiga Plains, Boreal Plains

References:

Distribution

2/164= 1% (Slave river basin) (B011;B059); revised distribution more than 10% (B172)

Score:

G

References:

Number of Occurrences

less than 5 (B011;B059); revised 13 sites from South Slave, to Nahanni, Liard, and Hume River but verification is needed to confirm these extensions

Score:

BD

References:

Area of Occupancy

Score:

-

Population

Population Size

About 3000-10 000

Score:

E

References:

Threats

Threats

developments on the Slave River(H133); revised lower threats due to more extensive distribution (B172)

Score:

C

References:

Intrinsic Vulnerability

likely sensitive to any developements which may occur on the Slave River because its range in the NT appears restricted to the Slave River, any perturbation to its Slave River habitat may eliminate it from occurring in the NT (H133);revised lower threats due to more extensive distribution (B172)

Score:

-

References:

General Status Rank

Rank:

Secure

Status Rank Description:

vulnerable to developments on the Slave River - small distribution and occurrence numbers are expected as at northern limit. widespread distribution & presumptive population sizes; but no formal assessments of populations.

S Rank:

S4

Decision Process Description:

Drafted by the Arctic Stock Assessment DFO Committee - Freshwater Fishes - Chris Day, Dr. Ross Tallman, Dr. Sue Cosens with review by S. Carriere in 2000; Reviewed by L Cooper, G Low, Dr Reist in 2005, no change; Possibly can extent distribution and number of locations based on B172 - modified from sensitive to secure? (SC April 2009); Reviewed by DFO in 2010, changed; Reviewed by DFO in 2015, no change; Reviewed by DFO in 2020, no change

Last Updated:

January 27, 2021

References

Age Of Maturity

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return

Ecozones

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return
Sawatzky, C.D., Michalak, D. Reist, J.D. Carmichael, T.J., Mandrak, N.E., Heuring, L.G. (2007) Distributions of freshwater and anadromous fishes from the mainland Northwest Territories, Canada.. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2793 - B172 Return

Habitat

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return
Arctic Stock Assessment DFO Committee - Freshwater Fishes - Chris Day, Dr. Ross Tallman, Dr. Sue Cosens (2000) Pers. communication. Arctic Stock Assessment Section, DFO Science Directorate, Freshwater Institute, 501 University Cres., R3T 2N6 , 204 983 5158 - H133 Return

Intrinsic Vulnerability

Arctic Stock Assessment DFO Committee - Freshwater Fishes - Chris Day, Dr. Ross Tallman, Dr. Sue Cosens (2000) Pers. communication. Arctic Stock Assessment Section, DFO Science Directorate, Freshwater Institute, 501 University Cres., R3T 2N6 , 204 983 5158 - H133 Return
Sawatzky, C.D., Michalak, D. Reist, J.D. Carmichael, T.J., Mandrak, N.E., Heuring, L.G. (2007) Distributions of freshwater and anadromous fishes from the mainland Northwest Territories, Canada.. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2793 - B172 Return

Longevity

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return

Naming

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return
Fish Base (1999) FishBase 99. http://www.cgiar.org/iclarm/fishbase/ - W012 Return

Number of Occurrences

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return
McPhail JD, and Lindsey CC (1970) Freshwater Fishes of Northwestern Canada and Alaska. Queen's Printer for Canada Fisheries Research Board of Canada Bulletin No. 173 RWED Library Call QL 626.M3 - B059 Return
Sawatzky, C.D., Michalak, D. Reist, J.D. Carmichael, T.J., Mandrak, N.E., Heuring, L.G. (2007) Distributions of freshwater and anadromous fishes from the mainland Northwest Territories, Canada.. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2793 - B172 Return

Population Size

Arctic Stock Assessment DFO Committee - Freshwater Fishes - Chris Day, Dr. Ross Tallman, Dr. Sue Cosens (2000) Pers. communication. Arctic Stock Assessment Section, DFO Science Directorate, Freshwater Institute, 501 University Cres., R3T 2N6 , 204 983 5158 - H133 Return

Range Extent

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return
McPhail JD, and Lindsey CC (1970) Freshwater Fishes of Northwestern Canada and Alaska. Queen's Printer for Canada Fisheries Research Board of Canada Bulletin No. 173 RWED Library Call QL 626.M3 - B059 Return
Sawatzky, C.D., Michalak, D. Reist, J.D. Carmichael, T.J., Mandrak, N.E., Heuring, L.G. (2007) Distributions of freshwater and anadromous fishes from the mainland Northwest Territories, Canada.. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2793 - B172 Return

Taxonomy

Scott WB and Crossman EJ (1979) Freshwater Fishes of Canada. Bryant Press Ltd RWED Library Call #QL626.S3 - B011 Return

Threats

Arctic Stock Assessment DFO Committee - Freshwater Fishes - Chris Day, Dr. Ross Tallman, Dr. Sue Cosens (2000) Pers. communication. Arctic Stock Assessment Section, DFO Science Directorate, Freshwater Institute, 501 University Cres., R3T 2N6 , 204 983 5158 - H133 Return
Sawatzky, C.D., Michalak, D. Reist, J.D. Carmichael, T.J., Mandrak, N.E., Heuring, L.G. (2007) Distributions of freshwater and anadromous fishes from the mainland Northwest Territories, Canada.. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2793 - B172 Return