Utilize aquaculture to replace agriculture so that fish can be raised on US croplands producing a symbiotic relationship

Indians put dead fish with corn when the land laid fallow from what I've read. Americans put chemical fertilizers and pesticides in the 70's to increase yeilds. Lets instead utilize natural bonding and raise live fish on the ground where they belong, not up in plastic breeders. The fish naturally provide ammonia for the plants and thus naturally promote life while doubling up on the utilization of the land, creating a garden to eat from, not a crop. Bringing forth the bounty of the land.