Species Profile

Lake Chub Atlin Warm Springs populations

Scientific Name: Couesius plumbeus
Taxonomy Group: Fishes
COSEWIC Range: British Columbia
COSEWIC Assessment Date and Status Change: November 2018
COSEWIC Status: Threatened
COSEWIC Status Criteria: D2
COSEWIC Reason for Designation: This population of small fish occupies unique thermal spring environments in British Columbia. It has evolved several unique physiological and life history traits that enable it to persist in these extreme environments. The small area of habitat in this warm spring complex, and risks posed by human activities and the introduction of invasive species, could result in extinction in a short period of time.
COSEWIC History of Status Designation: The species was considered a single population unit (Northern British Columbia Hotsprings populations) in November 2004 and placed in the Data Deficient category. When the species was split into separate units in November 2018, the "Atlin Warm Springs populations" unit was designated Threatened.
SARA Status: No schedule, No Status
Date of Listing (yyyy-mm-dd):

No schedule - No Status

Individuals of this species may be protected under Schedule 1 under another name; for more information see Schedule 1, the A-Z Species List, or if applicable, the Related Species table below.

Please note that this information is provided for general information purposes only. For the most up to date and accurate list of species listed under the Species at Risk Act, please see the Justice Laws Website.

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Protection

Federal Protection

Provincial and Territorial Protection

To know if this species is protected by provincial or territorial laws, consult the provinces' and territories' websites.

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Recovery Progress and Activities

The Atlin Warm Springs populations of Lake Chub are under consideration for listing under the federal Species at Risk Act (SARA). Recovery objectives have not been identified under SARA.

Documents

PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.

3 record(s) found.

COSEWIC Status Reports

  • COSEWIC Assessment and Status Report on the Lake Chub (Couesius plumbeus) in Canada (2019-10-09)

    Lake Chub is among the most widely distributed members of the minnow family in North America. Historically, it was considered to include three subspecies but they are now considered a single species. The form inhabiting hot springs is a variant of these groups. Based on genetic evidence for discreteness from other taxa and geographic separation as well as ecological adaptation, two designatable units (DU) of Lake Chub inhabiting hot springs in northern British Columbia are recognized. Note: This COSEWIC assessment was received by the Minister on October 15th, 2018.

Response Statements

  • Response Statement - Lake Chub, Atlin Warm Springs populations (2020) (2020-01-07)

    COVID-19 and the consultations on the listing of species at risk As a result of the COVID 19 situation, it may not be possible to have in-person meetings. We will work to ensure that all the known, potentially affected parties have the opportunity to contribute to the consultations and that the consultation process is flexible and sensitive to the current context. This population of small fish occupies unique thermal spring environments in British Columbia. It has evolved several unique physiological and life history traits that enable it to persist in these extreme environments. The small area of habitat in this warm spring complex, and risks posed by human activities and the introduction of invasive species, could result in extinction in a short period of time.

COSEWIC Annual Reports

  • COSEWIC Annual Report 2018 to 2019 (2019-10-09)

    Over the past year COSEWIC assessed a total of 56 wildlife species, 2 of which were assigned a status of not at risk. Of these 56, COSEWIC re-examined the status of 25 wildlife species; of these, the majority (80%) were reassessed at the same or lower level of risk. To date and with the submission of this report, COSEWIC’s assessments now include 799 wildlife species in various risk categories including 356 endangered, 189 threatened, 232 special concern, and 22 extirpated (that is, no longer found in the wild in Canada). In addition, 18 wildlife species have been assessed as extinct, 59 wildlife species have been designated as data deficient, and 199 have been assessed as not at risk.
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