As has been noted, fish farms make an important contribution to the future diet of our global population. Better still, a much smaller population following the inevitable elimination of huge numbers of humans. Which, is certain as a result of overpopulation.
Good sites for locating new fish farms are coastlines, rivers, lakes, quarries, ponds, reservoirs, water-filled pits, and all other unused areas of water. Each one is a potential site for the location of fish farms.