Patagonian Toothfish

The Patagonian toothfish, Dissostichus eleginoides, marketed as Chilean sea bass in the United States and Canada, is a fish found in the cold, temperate waters (between depths of 45 m (148 ft) to 3,850 m (12,631 ft)) of the southern Atlantic, Pacific & 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 an MSC certified fishery is active in the Ross Sea.

The average weight of a commercially caught Patagonian toothfish is 7–10 kg (15–22 lb), depending on the fishery, with large adults occasionally exceeding 100 kilograms (220 lb). They are thought to live up to fifty years and to reach a length up to 2.3 m (7.5 ft). Several commercial fisheries exists for Patagonian toothfish which are detailed below.