Never heard it called that but it could be something else. Google Goniopora and check out the images to see if thats what it is. For advice, I have none. whenever mine began to brown like that... they were doomed. At least for me. I have one know that has been thriving for the last 3 months.... But cant really tell you whats different this time around than in the past when I kept them. Maybe look at your Params?