A traditional fisherman in La Paz, Mexico, who works with SmartFish brings sustainable seafood to market. SmartFish was one of the competitors in last week's Fish 2.0 competition. Courtesy of Smart Fish hide caption

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Yellowtail jack (Seriola lalandi) at HSWRI in San Diego. Courtesy of HSWRI hide caption

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Parisi Tsakirios, 29, mends a net as he prepares for another fishing trip. "I can't imagine doing any other job, because I love the sea," he says. "But there are hardly any fish. I barely break even. I can't support my family." Joanna Kakissis/NPR hide caption

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Opponents of Michigan fish farms say there is no room for them in the lakes because of sport fishing and other recreational activities. sfgamchick/Flickr hide caption

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Carp are collected at a breeding farm near the Belarus village of Ozerny in November 2013. Researchers say there's a lot the aquaculture industry can do to be more efficient. Viktor Drachev/AFP/Getty Images hide caption

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Live tilapia raised by Blue Ridge Aquaculture are loaded into a truck bound for New York. Dan Charles/NPR hide caption

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Employees at Pan Fish USA, a salmon fish farm, unload fish feed on Bainbridge Island, Wash. Ron Wurzer/Getty Images hide caption

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Thierry Chopin from the University of New Brunswick examines a raft that holds strings of seaweed. The seaweed grows around pens of farmed salmon and soaks up some of the nutrients that would otherwise pollute the Bay of Fundy. Richard Harris/NPR hide caption

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Catfish swim in a tub outside the Osage Catfisheries office. Kristofor Husted/KBIA News hide caption

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The fly larvae in the AgriProtein factory feed on cow blood and bran. Courtesy of Jason Drew hide caption

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