Hippoglossus hippoglossus

Atlantic Halibut


  • Listed as Endangered on IUCN Red List in 1996
  • Classified as “Vulnerable” by The American Fisheries Society
  • 288 metric tons – 5% of overfishing classification qualification
  • Overfishing - trawling and bycatch

General Description

  • Olive/chocolate/slaty brown, 50-200lb
  • Largest flatfish, lies on left side, long dorsal fin
  • Gaping mouth and sharp, curved teeth

Ecological Importance

  • Secondary and Tertiary Consumer
  • Predators: Greenland shark and seals
  • Prey: fish, cephalopods, and crustaceans


Northern Atlantic

United States: Maine Coast, Cape Cod, Massachusetts Bay

World: Labrador, Greenland, Iceland

Current Effort to Prevent Extinction

  • Red List of IUCN
  • Must be at least 81cm to fish
  • No management plan