(NPR) If you buy fish in New York City, particularly from a small market or restaurant, there’s a pretty good chance it won’t be the fish it claims to be.

An ocean conservation group announced today that three in five retail outlets it visited, including 100 percent of sushi restaurants, were selling mislabeled fish. The report is just the latest in a string of investigations revealing that seafood mislabeling is commonplace.

The researchers, from the group Oceana, collected 142 fish samples earlier this year from 81 retail outlets, including large grocery stores, corner bodegas, high-end restaurants, and sushi bars. They analyzed the samples using DNA barcoding, and found that 39 percent of the fish were labeled as other species.

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