I got these from Petco they said they were dying and would not make it I insited they let me try so I got them for .00 down from .00 they said 90% suddenly died overnight when they came in, I scraped all the dead tissue off and had them for 4 weeks now and I see a new button glowing every few days so I guess I saved it? but do not know what type of Zoas they are or if they are even Zoas?