what are they?-starfish???
 

I have a 30 gall. nano which has been up and running for 2 years. All of a sudden I am getting an abundance of what looks like "baby" white starfish. -most are 5 and 6 sided. Is this common as a hitchiker that has been dormant...or is this something else? I probably have over 30 in the tank!

asterina starfish
 

Thanks-now I know what they are- they are multiplying fast so I will keep them in check.
Much appreciated!