DNA check uncovers widespread fish fraud

January 17, 2017

Menu transparency is a hot trend in the foodservice industry, but some of the top sushi restaurants in Los Angeles haven’t gotten the hang of it just yet. DNA analysis performed on samples of 10 popular seafood species served there found nearly half—47 percent—were “mislabeled.” The unanswered question: Were restaurant operators perpetrators of this ongoing fraud, or its victims?

For this study, researchers from UCLA and Loyola Marymount University collected and analyzed 364 samples over a four-year period, sourcing them from 26 LA sushi spots that had lofty ratings on Yelp and Zagat. The results uncovered new instances of species