All Sea Stars are good. 99.9 % of every type of organism is good in our tanks.
Have you ever looked at your tank at night? Those kind of small Stars usually come out to feed on all the bugs that come into the water column at night. I've seen rocks in those tanks literally look fuzzy with all the Sea Stars waving their arms. It's pretty cool.
Edited by Mark Peterson - January 30 2010 at 9:50pm