Something is eating my zoas

[BAllen]

I went out of town and was gone about 36 hours and I came back Saturday night and a frag of about 6-8 zoas got completely eaten.

Thenlast night I moved a plug to the same spot, so my emerald crab would eat the algae off the plug and today I see that 8 zoas got almost completely eaten. Both plugs were in the same spot right next to a piece of live rock. I have 2 other plugs of zoas about 6-8 inches from there that have never been touched.

My sexy shrimp have picked at Zoas (I have 2 Sexies), but they never ate a whole entire head before.

What could be doing this?

Tank Inhabitants:
1 False Perc Clown
1 Tailspot Blenny
1 Emerald Crab
1 Pistol Shrimp
1 Peppermint Shrimp
1 Blue-Legged Hermit Crab
Assorted Snails (Cerith, Nassarius & Nerite)

All of the above have been with me for at least 2 months.

 

[MUCHO REEF]

The Emerald crab would be what I'd zero in on. They can not be trusted with a tank full of zoas. They are voracious eaters, that's all they do 24/7. If you do a quick search in this forum, you will find many links and horror stories on Emerald Crabs. I'd remove him ASAP.

Mucho Reef

 

[aquaph8]

Yep +1