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Wisconsin AG seeks to stop Elon Musk's $1M payments at rally giveaway; Rural advocates urge CA lawmakers to safeguard banking protections; Federal, state job cuts threaten FL workers' rights, services; Alabama counties lack high-speed internet and health access.

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President Trump says there are ways for him to take a third term. New tariffs are scheduled for this week, but economists say they'll hurt buying power. And advocates say the Trans Day of Visibility is made more important by state legislation.

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Rural folks face significant clean air and water risks due to EPA cutbacks, a group of policymakers is working to expand rural health care via mobile clinics, and a new study maps Montana's news landscape.

Leftover fish parts could help keep industrial fishing waste low

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Monday, February 10, 2025   

About 20% of fish caught in the wild are not used to feed people across the world but a recent study found the unused portions of fish prepared for the public could be a sustainable alternative.

Inedible portions, called byproducts, can increasingly be rendered to create fish meal and fish oil. The bulk of fish meal and fish oil has traditionally come from wild-caught fish but researchers looked at rendering practices in five fisheries across the globe.

Dave Love, research professor for the Center for a Livable Future at Johns Hopkins University, said using byproducts from industrial fisheries is the most promising alternative to catching fish just to produce fish oil and meal. He added consumers in the U.S. have plenty of byproducts they could use.

"U.S. consumers favor things like fillets over eating whole fish or minimally processed fish," Love explained. "When you make a fillet, about 50% of the fish goes to the human food supply. About 50% goes to other uses. So we're really looking at that 50%, asking how much of it is used to produce fish meal and fish oil."

Fishmeal and fish oil are typically made from catching fish such as anchovy, sardine and menhaden, which are crucial to the Chesapeake Bay ecosystem.

Of fish caught specifically to produce fish oil and fish meal, less than 60% of byproducts were reused. Love pointed out there can be tension in the industry as it both fishes to feed humans and to make fish meal for other fish. He said disposing of byproducts by fisheries is not the most sustainable method and it can be better used to make sure fewer fish are being caught solely to feed other fish.

"The ones that were not using their byproducts were grinding it and dumping it in the ocean," Love noted. "That's not a really great use of this resource. And we think going forward, we'd like to see policymakers really encourage industries to better utilize byproducts and not grind and dump them at sea."

The aquaculture industry is the biggest user of fish meal and fish oil.


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