So I'm trying to create a working fish hatchery from the Hearthfire DLC, and here's what happened. The hatchery seemed to work at first, I tested it with an old character save and put each type of fish in it. Waited 3 days in game, and all the fish appeared like they should. However, now they won't go away. They appear in saves on the character that were made before I put the fish in, they appear in OTHER character saves, and I even created a new character and sure enough, all the fish were there. I followed the directions from http://bertscktutorial.ucoz.com/forum/12-10-1. Only difference is there are no docks or nets, but those should be cosmetic only.