emerald crabs

[chefbill]

I have 2 in my 29g biocube as part of CUC. Lately it looks like one of them is picking at a zoa colony. They retract and close up, but don't look damaged, though it seems like it pulling pretty hard on te polyps and the mat. Keep or get it out?

 

[carey]

I'd say it most likely is eating algae around the polyps. I was worried at first too when they did that but upon further examination found them to just be tugging at algae.

 

[woody390]

Yeah unlikely they would eat healthy coral