Bluefin Angel Taking a Bite of Zoa's

[jc8745]

So I have had my bluefin angel for a several months now, I also have had zoa's/palys longer (5 different ones). Never seemed to have any problems.

I had re-organized the tank moving all the zoa/paly colonies close to each other so they could grow and fill out that section of the tank. No problems at that time.

My original and oldest colony was 4"x5" brown with pink center with about 130 polyps (best guess there) all my other colonies are much newer with 15 or less polyps.

I decided to frag the larger colony to balance things out. Since this colony was on a thin 4"x5" rock, I used a dremel to make the frags.

Everything seemed fine after fragging, except my remaining piece, kept ending up on the sand bed, getting knock of the rocks.
So then I started watching closer. Then my other colonies started staying closed up, and looking a little bruised.

Then I saw what was going on, the Bluefin was coming around and biting at the polyps. First they would be open, and it would nip, they would close up and it would nip a little more.

At this time, I have cut plastic 20oz bottles and placed them over the colonies to protect them. This is working, but isn't the most attractive situation.

Any ideas, suggestions ?