Imposter Fish: The 7 Most Often Mislabeled Fish at the Market Slideshow

Chilean sea bass used to be known as Patagonian toothfish; this doesn't constitute mislabeling because the former is now an accepted market name for the fish. However, Chilean sea bass is a prime target for mislabeling because it's expensive, typically retailing for $16–$20 per pound. Oceana’s survey found that 42 percent of retailers and 36 percent of restaurants misrepresented the fish, substituting a cheaper related species called Antarctic toothfish. The popularity of Chilean sea bass has effectively led to the decimation of the population, so maybe swapping in the more plentiful Antarctic toothfish isn’t such a bad thing after all.