I think this nudibranch is the solution for tulip anemone. You probably heard about it from Brian Plankis
He was the original author that described its behavior preying on tulip/majano anemones.
I was very interested in this as well 2 years ago, as my tank had thousands of tulip anemone, all from one original animal. I PM'ed him to ask about his effort of raising the nudibranch. He stated that he was able to hatch them; but could not raise them past a certain number of days. As a result, he passed on the project to a good friend of his, who had very good result raising aiptasia-eating nudibranch.
The latest update that I've read was that they figured out the reason why they couldn't raise them to adulthood: apparently the adults will eat both tulip and majano anemones; but the youngsters need to feed on majano in order to survive.
Well, I then lost interest because I dismantled my old tank to move to a new house and set up my tank again. In the process, I let all of my LR stay in the dark for several weeks and that killed all of the tulip anemones.
I bet if you ask him on the Project Dibs website, he'll point you to the right direction as far as their availability. By the way, Project Dibs is way cool with all of the tank-raised snails for sale.
In the mean time, you might want to consider the false falcula butterfly fish. According to my reading, this is the best butterfly that will eat majano but leave most corals alone. Just note that it is different than the true falcula butterfly. The false falculas are much harder to come by.
Edited by dkle - December 27 2007 at 9:39pm