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Culaea inconstans (Kirtland, 1840)
Brook Stickleback
Family: Gasterosteiformes

Photograph

© Ian Gardiner     (Photo ID #5827)

Map


Click on the map to view a larger version.
Source: Distribution map provided by Don McPhail for E-Fauna BC

Species Information

This is a smal fish with four to six short spines arranged in a straight row in front of the dorsal fin, and with the gill membranes free from the isthmus; it differs from other stickleback species in BC in dorsal spine number. For further information, refer to McPhail (2008).
Source: McPail, J. D. 2008. The Freshwater Fishes of British Columbia. University of Alberta Press, Edmonton.

Biology

Species Biology

Inhabits cool, vegetated, sand or mud bottoms of lakes and ponds. Also in pools and backwaters of creeks and small rivers (Ref. 1998, 10294). Rarely found in brackish water. Feeds on crustacean and insect larvae, eggs and larvae of fishes, snails, oligochaetes and algae (Ref. 1998, 10294). Preyed upon by kingfishers, herons, and mergansers and occasionally by fishes like Salvelinus fontinalis and Esox lucius (Ref. 1998).

Source: FishBase. Page, L.M. and B.M. Burr 1991 A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.

Distribution

BC Distribution and Notes

In B.C., the brook stickleback is found in the northeastern part of the province. It is extremely abundant in muskeg areas and occupies a number of major drainages (although they are all part of the Mackenzie River system). Elsewhere there are populations of this species that lack pelvic girdles and, eventually, this condition may turn up in B.C.

Source: Information provided by Don McPhail for E-Fauna BC.
Global Distribution

North America: Nova Scotia to Northwest Territories and eastern British Columbia in Canada; Great Lakes-Mississippi River basins south to southern Ohio and Nebraska in USA and west to Montana, USA. Isolated population in Canadian River system in northeastern New Mexico, USA.

Source: FishBase. Page, L.M. and B.M. Burr 1991 A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.
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Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
COSEWIC
NativeS5YellowNot Listed



BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Additional Range and Status Information Links