I work at an urban farm in Boston, MA that has an aquaculture system: ReVision Urban Farm. The farm is associated with a shelter, which we provide food for. It is simply eco-logical to produce sustainable food near the site of consumption: the city. Urban farming operations are small and want to be good neighbors to their community, so they usually offer organic/non-genetically modified food. Although I don't know if I agree with all those fish being forced to live in such tight quarters, I think this option of food production definitely needed to be explored.