Fish feed is harder to produce than cow feed, but it is not an insurmountable obstacle: http://en.wikipedia.org/wiki/Fish_farming#Intensive_aquaculture http://e

Fish feed is harder to produce than cow feed, but it is not an insurmountable obstacle: http://en.wikipedia.org/wiki/Fish_farming#Intensive_aquaculture http://en.wikipedia.org/wiki/Fish_farming#Intensive_aquacult...