Starfish?

[Mashpotatoes74402]

Guy at LFS offered me a couple of these. Said they were small starfish. They all seem to have six arms/legs/tentacles.
If this is a starfish. What kind ?
And if you have one a link so I can read more about these guys

 

[ezy33]

Asterina starfish. Some are considered to be reef safe.
http://www.reefs.org/forums/topic129808.html