I've got one small colony of zoanthids in my tank. It's done okay, not really grown much over the past year, but stayed consistent. Suddenly it's started losing polyps. They are definitely being eaten as I can see the base has been scraped clean off the rock. What critters can do this?
What I have in the tank (that I know of):
What I have in the tank (that I know of):
- Emerald mithrax crabs (2)
- Hermit crabs
- Peppermint shrimp (not seen in a year or more)
- Numerous types of snails from a cleanup crew
- Lawnmower blenny
- Firefish goby
- Unknown type of sandsifting goby or blenny
- Unknown type of goby or blenny