As we have mentioned, caviar harvested from wild sturgeon has been banned. Those who wish to get into caviar production are starting to create caviar farms. But what sort of place is large enough to hold 400 Siberian sturgeon? How about an old sewage plant? Ananova reports that a former sewage plant near Zurich,Switzerland will be home to a new fish farm. The plant has been cleaned and the fish eggs won't be ready for harvesting for eight years by which time the stink should have faded.