Another mystery guest help...

[eliottmarc]

This guy was on my tank wall as well a a bit bigger me on the other side anyone have an idea what it is looks like a star fish here's the link for pics.
http://s1051.photobucket.com/albums/s43 ... y%20guest/

 

[jimid]

Asternia star.
I like 'em but some say a nuisance.

 

[Josh]

Older post but I also like these guys and tend to allow them to stick around. They'll be first to go if I notice them messing with anyone else though!

 

[skipm]

They are generally harmless but they can grow to plague proportions. If you get lots of them you can add bumble bee or bongo shrimp to your tank,they feed off of them.