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"There's a logic to it for young people, becoming entrepreneurs, to want to move forward, to be economically prosperous," said Jose Antonio Martinez, a former attorney who co-owns JoJo Aquaponics.

Aquaponics is an aquaculture system in which wastewater from farming fish is fed to hydroponically grown plants like lettuce that purify the water.

That's why two young Cuban entrepreneurs decided to turn to aquaponics to combine the two in a bid to get more bang for their buck and at the same time bolster the island's dwindling food supply, they told Reuters.

"Aquaponics systems ... use a technology that is expensive. In the Cuban context, it is very difficult for us to be able to access financing," Martinez said, adding that he had received some funding via his local municipality, though it was still insufficient.

Then the second thing is, I did a lot of weird stuff in terrestrial agriculture, like I worked with a lot of aquaponics, which everybody thought was way too weird to commercialize, but I actually got one of my clients to a pretty nice commercial scale.