brook stickleback

Culaea inconstans

Stickleback beneath Mexican Waters

Temperate
Upper river
Northern Hemisphere
Regional distribution
Freshwater fish
Europe
North America
Fusiform
Small
Temperate fish

The brook stickleback (Culaea inconstans) is a small freshwater fish that is distributed across the US and Canada. It grows to a length of about 2 inches. It occupies the northern part of the eastern United States, as well as the southern half of Canada.

Class: Teleosts
Order: Perches and Allies
Family: Gasterosteidae
Genus: Culaea
Maximum length: 8.7 cm
Water: Freshwater
Body shape: fusiform
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. Introduced elsewhere (Ref. 5723 ). Introduced in upper Inn drainage in Bavaria, Germany and accidentally in the 1960’s with Micropterus to southern Finland where it has established a population in Lake Lohjanjarvi (Ref. 59043 ).
Conservation status: LCLeast Concern

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