mithrax picking on sps

[psteeleb]

Anyone ever witness a mithrax crab picking on sps?

I have wondered why my Mili's don't seem to have the long polyps that I see in other tanks. I use to think it was water condition, then, last night I noticed my red mithrax picking on one. He actully looked like he was pulling off polyps. So now I'm wondering if he's a culprit.

thanks for any feedback

 

[pineappleface]

I had a hairy green mithrax that I witnessed pulling/picking on some acro polyps. However this wasn't a constant thing, he mainly worked on algae. I also had a red mithrax, but it was always a model citizen.