Chilean Sea Bass is Actually Patagonian Toothfish
Chilean sea bass will frequently appear on cookery shows on television if you watch enough of them. It's the preferred fish for elegant feasts, and it sounds very opulent, doesn't it? That's the goal, I suppose. Chilean sea bass used to go by a name that sounded really terrible, so they had to come up with a romantic one for it. Patagonian toothfish is what it is.
Although the Patagonian section isn't too horrible, it doesn't flow as well as "Chilean." There is no getting around the fact that toothfish sounds disgusting. Simply because merchants believed it would sound more appealing to purchasers, the name was changed. All of it is marketing.
It's a deep sea fish whose name was changed in 1977 and which was little known prior to the development of modern fishing techniques. You can receive Patagonian or Antarctic toothfish if you purchase Chilean sea bass due to the lax standards surrounding the phony name. Additionally, the methods used to collect these fish are quite harmful to the ecosystem, so you might wish to avoid serving them.