- Joined
- Jan 9, 2018
- Messages
- 191
- Reaction score
- 131
So I got this zoa colony week or so ago. Assumed this was just an old shell stuck to this rock/colony. I was looking at my tank when the lights started to fade for the evening and it closed then opened up. I was like whoa! So what do you guys think it is? Just some generic mollusk?