The US Aquaculture (fish farming etc) industry is dying or stagnating according to the World Aquaculture Society with little hope of rescue. The US only produces 10% of its seafood and that number is declining. But Aquaponics might already be saving the day. Take a read.
Can Aquaponics Help Restore the US Aquaculture Industry?
Aquaculture Magazine Aug/Sept 2017 Pg. 72 & 73
Background information from the World Aquaculture Society, "The Stagnation of US Aquaculture: http://bit.ly/2nodnus