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Deepwater Sculpin

Myoxocephalus thompsonii

COSEWIC Status: Special Concern

J. R. Tomelleri


  • Grey-brown bottom feeders with a white belly
  • Separated dorsal fins and large pectoral fins, lacks true scales
  • Full grown at 10-15cm

Habits and Reproduction

  • Spawning is believed to occur during the winter
  • Little is known about the biology of this fish


  • Inhabits cold highly oxygenated lakes
  • Found at depths between 60-150m


  • Main threat to this species is lake eutrophication, from nutrient pollution
  • Quagga mussels also pose a threat to this species as they force prey into deeper habitat