Climate change poses a severe threat to food production, making it imperative to find sustainable methods. One such method is aquaponics, which grows fish and vegetables together. Now, Ben-Gurion University of the Negev water researchers have offered a proof of concept for a new closed loop system that produced more fish and vegetables while using less energy than conventional systems.
I would make it big and use just one crop and one kind of fish, and then crossbreed the crop with the fish so they share genes but have better yield and can be eliminated by a single virus popping up and killing it all
We gotta make that virus, too. Just in case the fish-plant hybrids rebel.