Can Fish Eco-Labeling be Trusted?

Programs that provide sustainable certification for fisheries may be too generous with their accreditation.

Written byJef Akst and Edyta Zielinska
| 2 min read

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WIKIMEDIA COMMONS, EM-JAY-ES

A new report published online last week criticized two major fisheries certification programs, the Marine Stewardship Council (MSC) and the Friend of the Sea (FOS), for certifying stocks of fish that may not be sustainable.

Fisheries biologist Rainer Froese of the Helmholtz Centre for Ocean Research in Germany and Alexander Proelss of the University of Trier came to their conclusion after examining 71 MSC-certified stocks and 76 FOS-certified stocks of mackerel, swordfish, tuna, and other species. In total, 31 percent of the supposedly sustainable MSC stocks and 19 percent of FOS stocks are not worthy of the label.

“We’re putting [the certification programs] under a lot of pressure and we hope that will work,” Froese told Nature. “I want to improve them, not to kill ...

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  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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