Species Profile

Deepwater Sculpin Western populations

Scientific Name: Myoxocephalus thompsonii
Taxonomy Group: Fishes
Range: Northwest Territories, Alberta, Saskatchewan, Manitoba, Ontario
Last COSEWIC Assessment: April 2006
Last COSEWIC Designation: Not at Risk
SARA Status: No Schedule, No Status


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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 update status report on the deepwater sculpin Myoxocephalus thompsonii (Western and Great Lakes-Western St. Lawrence populations) in Canada (2006)

    The deepwater sculpin, Myoxocephalus thompsonii, is a lake-dwelling sculpin in North America. Much confusion and misinformation exists due to the lack of recognition of differences between three closely related taxa: deepwater sculpin, freshwater forms of fourhorn sculpin (Myoxocephalus quadricornis), and marine fourhorn sculpin. This has resulted in misidentifications and muddled taxonomy. However, the deepwater sculpin has been shown to be specifically distinct from both marine and freshwater fourhorn sculpin. It has an elongate body, lacks scales, and can be separated from other cottids based on the absence of cephalic horns, a gill membrane that is free from the isthmus and distinct separation between the two dorsal fins.

COSEWIC Assessments

COSEWIC Annual Reports

  • COSEWIC Annual Report - 2006 (2006)

    2006 Annual Report to the The Minister of the Environment and the Canadian Endangered Species Conservation Council (CESCC) from the Committee on the Status of Endangered Wildlife in Canada.