must be some other variety of mithrax...he has those nice algae claws so you should be ok there...upon further review it does appear to be gonipora, wish i could help you with some advice, but i killed one myself in the early days...asked the LFS if it was photosynthetic like zoanthids, guy said "yes" so i took it home...6 months later = sad times, but after that i researched everything lol
im starting to get curious about your "new friend"
im starting to get curious about your "new friend"