Dissostichus eleginoides
Image of a w:Patagonian toothfish from the U.S. FDA. http://www.fda.gov/Food/FoodSafety/Product-SpecificInformation/Seafood/RegulatoryFishEncyclopediaRFE/ucm088570.htm

Source: https://commons.wikimedia.org/wiki/File:Toothfish.jpg

The Patagonian toothfish, Dissostichus eleginoides, is a species of cod icefish found in cold waters (1–4 °C) between depths of 45 m and 3,850 m in the southern Atlantic, Pacific and Indian Oceans and Southern Ocean on seamounts and continental shelves around most sub-Antarctic islands. A close relative, the Antarctic toothfish (Dissostichus mawsoni), is found farther south around the edges of the Antarctic shelf; and a Marine Stewardship Council (MSC) certified fishery is active in the Ross Sea. The average weight of a commercially caught Patagonian toothfish is 7–10 kg, depending on the fishery, with large adults occasionally exceeding 100 kilograms. They are thought to live up to fifty years and to reach a length up to 2.3 m. Order: Perciformes, Family: Nototheniidae, Genus: Dissostichus, Species: Dissostichus eleginoides (Smitt, 1898).
Synonyms:
Macrias amissus T. N. Gill & C. H. Townsend, 1901
Dissostichus amissus (T. N. Gill & C. H. Townsend, 1901)