Tagged Atlantic Cod

Photograph of a bright yellow fish.

So far, researchers have developed DNA barcodes to accurately identify 4,600 of the more than 29,000 known fish species. Atlantic cod is an economically important fisheries species.  However, it's threatened by overfishing and is listed as Vulnerable on the IUCN's Red List of Threatened Species. More about sustainable seafood can be found in our sustainable seafood featured story