Justin Londer CC BY-NC-SA 2.0

Justin Londer CC BY-NC-SA 2.0

fish_icon_3Great Lakes – Western St. Lawrence Populations: Special Concern Nationally


• Flat, long body, four to 10 centimetres long; lacks true scales
• Has separated dorsal fins and large pectoral fins with three bands
• Eyes located at top of head; large mouth with small teeth
• Dark grey to brown in colour with dark marking along its back; light speckles on its sides and a pale belly


• Patchy distribution in Canada, limited to cold, deep water
• In Ontario, occurs in lakes Nipigon, Ontario, Superior, Fairbank and Huron


• Habitat loss and degradation
• Declining water quality (eutrophication)
• Aquatic invasive species


• Not protected under the Species at Risk Act, 2002


Deepwater sculpin are widespread in lakes Superior and Huron, although they may be in decline in the latter.