I have a buddy that bought one from Petland in Athens a couple of weeks ago and he also bought some bloodworms suggested by the staff members. Within a couple of days it was going after the bloodworms and kept this up. I bought one last weekend from the same store and im having the same success as well. It took him a few days as well but he goes after my bloodworms and pe mysis as well. If you want to get a mandarin I would get bloodworms as well. They seem to be getting smarter.