Acro-Eating Commensal Crab?

xtm

Active member
Hi guys

I have a Digitata that came with a crab, but he looked like he wasn't damaging anything so I just left him alone. Not until last week when I introduced this colony.. he quickly abandoned the digitata and jumped into this one. I said cool, he's supposed to be an Acro crab not a Digitata crab anyways, so I let it go..

About two days ago I noticed that the tip of every branch of this colony has turned white and all torn up, with slime all over itself. Usually when you see white tips that's a sign of growing right? No.. these have torn tips. While I was looking, I saw this "commensal" crab put his huge claw on the tip, broke a piece and swallowed it!!! :eek2: I couldn't believe what I saw!!

I took him out and into the sump he went.

SO.... Are there commensal crabs that do this??

BTW, here's a pic of the colony.. notice the torn white tips

acro.jpg
 
Yup, not all crabs that go into acros are safe.

Its usually the fuzzy blue eyed crabs which are the worse.
 
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