Pet Forum / Aquaria / Marine Reef / January 2007

It's a small starfish. Left alone, they will grow the remaining arms. I have
quite a few in my tank, and they don't seem to do any harm.

George Patterson
     No one ever says "It's only a game." when his team is winning.

Asterina (tiny, white...) Sea Stars
I have plenty in my tank...not to worry
they are beneficial like bristle worms.

That's a tiny sea star of the genus Asterina. Most of these critters are
simply harmless algae and bacteria feeders, but some have been seen chowing
SPS tissue. They are quite common in reef tanks, so don't be alarmed unless
you see them cruising over on of your acro's. They reproduce by dropping
legs, which explains the odd and highly variable shape!
http://www.wetwebmedia.com/asterinafaqs.htm

Chris