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Antarctic toothfish, Antarctic cod
Dmawsoni Head shot.jpg
Antarctic toothfish (D. mawsoni) in McMurdo Sound
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Nototheniidae
Genus: Dissostichus
Smitt, 1898[1]
Type species
Dissostichus eleginoides
Smitt, 1898
  • Macrias T. N. Gill & C. H. Townsend, 1901

Dissostichus, the toothfish, is a genus of cod icefishes found in the southern oceans. Individuals may live over 50 years, reach lengths over 2 m and weigh over 200 kg.

Toothfish are vital to the sustaining of South Georgia and the South Sandwich Islands and as a result on 4 September a national day is dedicated to the toothfish.[2][3]


Two species in this genus are recognized:[4]


Both species are marketed in the United States as Chilean sea bass (or Chilean seabass) or less frequently as white cod.[5] "Chilean sea bass" is a marketing name, coined in 1977 by Lee Lantz, a fish wholesaler who wanted a more attractive name for selling the Patagonian toothfish to Americans.[6][7][8] In 1994, the U.S. Food and Drug Administration (FDA) accepted "Chilean sea bass" as an "alternative market name" for Patagonian toothfish.[8]


  1. ^ Smitt, F.A. 1898 Poisson de l'expédition scientifique à la Terre de Feu.
  2. ^ http://en.mercopress.com/2015/09/04/toothfish-day-celebration-in-south-georgia-and-south-sandwich-islands
  3. ^ https://www.youtube.com/watch?v=GlnegoEzeL0
  4. ^ Froese, Rainer, and Daniel Pauly, eds. (2014). Species of Dissostichus in FishBase. February 2014 version.
  5. ^ Johanna P. Pierre, JPEC Ltd (August 6, 2013) [December 9, 2012]. "Chilean Seabass" (PDF). Monterey Bay Aquarium Seafood Watch. Monterey Bay Aquarium Foundation. Archived from the original (PDF) on 21 February 2014. Retrieved 12 February 2014. 
  6. ^ "The Invention of the Chilean Sea Bass". Priceonomics.  Retrieved on 16th May 2015.
  7. ^ "John Weller's "The Last Ocean: Antarctica's Ross Sea Project: Saving the Most Pristine Ecosystem on Earth"". Radio Times with Marty Moss-Coane. WHYY. February 12, 2014. Retrieved 12 February 2014. 
  8. ^ a b G. Bruce Knecht, Hooked: Pirates, Poaching, And the Perfect Fish", 2006. ISBN 1-59486-110-2. p. 9