Baby Starfish?

I am completely unsure about this but is this a bay starfish? It was on my glass after I had moved some rock around. The first pick is it by itself, the second is my pinky finger next to it, and the third is a penny. It is tiny but looks just like a starfish. Please tell me what your opinion is, or if you have seen anything like this before.

 

I meant to say baby starfish not "bay" sorry bout that...

 

Asterina star (spelling?), as far as I know they're reef safe and good to have in the tank.

 

just noticed one on my glass, this morning!! should we start handing out cigars?LOL.

 

there are two different types, one eats corals and the other doesnt. nobody as far as i know, knows how to tell them apart. these starfish are a pest, they dont need another starfish to multiply, they just split in two. the can over take your tank. in my experience its best to rid of them.
http://www.3reef.com/forums/coral-h...-getting-mowed-asterina-starfish-33881-2.html

 

its an asterina and they can be damaging to reefs depending on what kind it is, i know some eat montis if you have those here is a link that should help (i think)
Starfish: Considerations for the Common (and Commonly Misunderstood) Varieties by Anthony Calfo - Reefkeeping.com

 

There are more than just two types. Many different species inhabit reef aquariums. Try to observe it feeding.

 

Aww Its cute!!!

 

A search on WWM says most are harmless but some do chow on SPS. I guess I'm fortunate enough that none of mine eat my coral.

 

Thanks for the info! I was excited when I saw it, now I'm not so sure, I just hope I don't get a huge outbreak of them. Will it get bigger?