Unidentified crab

[aggiebear]

Hey everyone...
I just noticed an unidentified crab in my tank. He is about as big as nickle and is covered w/ dark red sponges it looks like. I'm thinking he is a decorator crab. He is hanging around one of my yellow sponges....should I be concerned. I can't tell if he is eating it or not.

 

[reef-addict]

Well... you should always be worried An unidentified crab can really wreak havok. But ... yer best chance is to get a picture on here so we can identify it , or to your local pet store.
Hey.. don't be too worried.. i think i find something new in my tank about every other week