Good guy or bad guy?

[Tippfish]

Good or bad? Keep finding new "things". Think I need a QT for my live rock...

 

[deerhunter06]

asterina starfish white ones are usually ok. black ones bad

 

[SeahorseKeeper]

Asternia starfish. I like them but many report that they will eat corals. They can reproduce quickly if there are excess nutrients. They reproduce by "dropping" legs.

 

[Tippfish]

Thanks again. I really appreciate all of the help I get here. I'm actually trying to do some research before posting. Thanks all