FDA scientists use rodeo DNA in fight against fish switching - al.com

FDA scientists use rodeo DNA in fight against fish switching - al.com: "The fishermen competing in the Alabama Deep Sea Fishing Rodeo are helping to catch crooked fishmongers who engage in fish substitution — passing off low-value fish, something like a croaker, for a premium species, such as red snapper.

Such switches are fairly common, according to FDA officials, because the skinless, boneless filets of many fish appear nearly identical to most people.

A study published in the science journal Nature found that 77 percent of fish sold as red snapper in seafood shops were actually another species."