The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T202400A15362383
Dallia pectoralis, Alaska Blackfish
Assessment by: NatureServe
View on www.iucnredlist.org
Citation: NatureServe. 2013. Dallia pectoralis. The IUCN Red List of Threatened Species 2013:
e.T202400A15362383. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom
Phylum
Class
Order
Family
Animalia
Chordata
Actinopterygii
Esociformes
Umbridae
Taxon Name: Dallia pectoralis Bean, 1880
Common Name(s):
• English:
Alaska Blackfish
Assessment Information
Red List Category & Criteria:
Least Concern ver 3.1
Year Published:
2013
Date Assessed:
November 23, 2011
Justification:
Listed as Least Concern in view of the large extent of occurrence, large number of subpopulations, large
population size, apparently stable trend, and lack of major threats.
Geographic Range
Range Description:
Range includes lowlands of eastern Siberia, Bering Sea islands (St. Lawrence, St. Matthew, Nunivak), and
Alaska Colville River Delta west and south to central Alaska Peninsula near Chignik (upstream in the
Yukon-Tanana drainage almost to Fairbanks). The species has been introduced on St. Paul Island and in
the Anchorage area. The range possibly is limited by lake chub, Couesius plumbeus (Lindsey and McPhail
1986).
Country Occurrence:
Native: Russian Federation; United States
© The IUCN Red List of Threatened Species: Dallia pectoralis – published in 2013.
http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
1
Population
Total adult population size is unknown but apparently quite large (greater than 100,000). This species is
relatively abundant within its restricted range in Eastern Chukotka. It is abundant in lowland lakes and
interconnected waterways, especially in the Yukon-Kuskokwim delta area.
Trend over the past 10 years or three generations is uncertain but likely relatively stable.
Current Population Trend: Stable
Habitat and Ecology (see Appendix for additional information)
This sluggish bottom dweller usually occurs in heavily vegetated lowland swamps and ponds, also in
medium to large rivers and lakes where vegetation is abundant (Lee et al. 1980, Page and Burr 2011); it
is most abundant in tundra regions but does occur in forested areas. Spawning occurs probably in
swampy potholes, in vegetation at the bottom of shallow ponds and quiet streams.
Systems: Freshwater
Use and Trade
This species is of value in subsistence fisheries and in commercial aquaria.
Threats
No major threats are known.
Conservation Actions
Currently, this species is of relatively low conservation concern and
does not require significant
additional protection or major management, monitoring, or research action.
Credits
Assessor(s):
NatureServe
Reviewer(s):
Smith, K. & Darwall, W.R.T.
Facilitators(s) and
Compiler(s):
Hammerson, G.A. & Ormes, M.
© The IUCN Red List of Threatened Species: Dallia pectoralis – published in 2013.
http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
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Bibliography
Armstrong, R.H. 1994. Alaska Blackfish. Wildlife notebook series. Alaska Department of Fish and Game,
Anchorage, AK.
Fall, J.A., Chythlook, M.B., Schichnes, J.C. and Morris, J.M. 1996. An overview of the harvest and use of
freshwater fish by the communities of the Bristol bay region, southwest Alaska. Technical Paper. Alaska
Department of Fish and Game, Anchorage, AK.
Gudkov, P.K. 1998. Bering Sea Dallia pectoralis in the Chukchi Peninsula. Journal of Ichthyology 38(2):
199-203.
IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org.
(Accessed: 12 June 2013).
Lee, D.S., Gilbert, C.R., Hocutt, C.H., Jenkins, R.E., McAllister, D.E. and Stauffer, J.R. Jr. 1980. Atlas of
North American freshwater fishes. North Carolina State Museum of Natural History, Raleigh, North
Carolina.
Lindsey, C. and McPhail, J. 1986. Zoogeography of fishes of the Yukon and Mackenzie Basins. In: C.H.
Hocutt and E.O. Wiley, (eds) (eds), The Zoogeography of North American Freshwater Fishes, pp. 639-674.
John Wiley and Sons, New York.
Lopez, J.A., Bentzen, P. and Pietsch, T.W. 2000. Phylogenetic relationships of esocoid fishes (Teleostei)
based on partial cytochrome b and 16S mitochondrial DNA sequences. Copeia 2000: 420-431.
McHenry, E.T., Nelson, D.C., Watsjold, D.A., Townsend, A.H., Kepler, P.P., Trent, T.T. and Kubik, S.W. 1974.
Studies of introduced blackfish in waters of southcentral Alaska in annual report of performance for
sport fish studies. Alaska Department of Fish and Game, Juneau, AK.
Mecklenburg, C.W., Mecklenburg, T.A. and Thorsteinson, L.K. 2002. Fishes of Alaska. American Fisheries
Society, Bethesda, MD.
Morrow, J.E. 1980. The freshwater fishes of Alaska. Alaska Northwest Publishing Company, Anchorage,
AK.
Nelson, J.S. 1984. Fishes of the world. John Wiley & Sons, New York, New York.
Nelson, J.S., Crossman, E.J., Espinosa-Perez, H., Findley, L.T., Gilbert, C.R., Lea, R.N. and Williams, J.D.
2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American
Fisheries Society, Bethesda, Maryland.
Page, L.M. and Burr, B.M. 1991. A field guide to freshwater fishes: North America north of Mexico.
Houghton Mifflin Company, Boston, Massachusetts.
Page, L.M. and Burr, B.M. 2011. Peterson field guide to freshwater fishes of North America north of
Mexico. Houghton Mifflin Harcourt, Boston, Massachusetts.
Robins, C.R., Bailey, R.M., Bond, C.E., Brooker, J.R., Lachner, E.A., Lea, R.N. and Scott, W.B. 1991.
Common and scientific names of fishes from the United States and Canada. American Fisheries Society.
Scott, W.B. and Crossman, E.J. 1973. Freshwater fishes of Canada. Fisheries Research Board of Canada
Bulletin 184, Ottawa, Canada.
Citation
© The IUCN Red List of Threatened Species: Dallia pectoralis – published in 2013.
http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
3
NatureServe. 2013. Dallia pectoralis. The IUCN Red List of Threatened Species 2013:
e.T202400A15362383. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
Disclaimer
To make use of this information, please check the Terms of Use.
External Resources
For Images and External Links to Additional Information, please see the Red List website.
© The IUCN Red List of Threatened Species: Dallia pectoralis – published in 2013.
http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
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Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat
Season
Suitability
Major
Importance?
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent
Rivers/Streams/Creeks (includes waterfalls)
-
Suitable
Yes
5. Wetlands (inland) -> 5.4. Wetlands (inland) - Bogs, Marshes, Swamps,
Fens, Peatlands
-
Suitable
Yes
5. Wetlands (inland) -> 5.5. Wetlands (inland) - Permanent Freshwater
Lakes (over 8ha)
-
Suitable
Yes
5. Wetlands (inland) -> 5.7. Wetlands (inland) - Permanent Freshwater
Marshes/Pools (under 8ha)
-
Suitable
Yes
Additional Data Fields
Population
Population severely fragmented: Custom (N)
Habitats and Ecology
Movement patterns: Not a Migrant
© The IUCN Red List of Threatened Species: Dallia pectoralis – published in 2013.
http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T202400A15362383.en
5
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN
Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation
International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas
A&M University; Wildscreen; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™