Any of various fish of the genus Dissostichus.(noun)
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Use "toothfish" in a sentence
"What the Uruguayans were doing was fishing for Patagonian toothfish, aka Chilean sea bass, an endangered species."
"It is now assessing 118 more fisheries, including the Antarctic toothfish, which is sold as"
"Bluefin tuna are drastically overfished; Patagonian toothfish - euphemistically sold as "Chilean seabass" - are hunted by outlaw fishing boats in Antarctica."