There are some that do some that don't,
Contrary to what most say....
some can be bad.
I witness this & every one I see in my tank.....I take out:
- Info on predatory starfish -
That's not what you said in your previous post & a warning should have been given to the poster if you already knew.
Excerpt from the link I provided:
"Several people have argued that these starfish are harmless, but we have yet to find any that will not eat coral polyps."