Green thing with three arms that moves...

[Snorkeler24]

I bought some LR today and i got some sort of feather duster (first pic). The thing that puzzled me was this little green thing with 3 arms. It looks like it should have 4 but ones missing. Its about the size of the end of a pencil eraser and looks like it is green in the middle with white fuzzy arms. Hope you can see it its tiny and kept crawling around the rock. It's directy underneath the feather duster at the bottom of the light color on the rock.

 

[mrfipp]

It looks to me like an Asterina starfish. Check here....


http://www.xtalworld.com/Aquarium/hitchfaq.htm

 

[Snorkeler24]

i didnt see it on that page but I googled it and I think you are right. Are they bad to have in the tank?

 

[mrfipp]

There are a couple RARE varieties that are said to snack on coral, but the vast majority of these stars, are completely harmless. I wouldnt worry about him.

On that link, I believe its the 27th picture down.