Hitchhikers!

[Andrew v.s wild]

Found this guy on my glass not sure if he is good or not?
And these things that popped up on my rocks?
Could somebody help identify them?

[Gseclipse02]

the first one looks like that starfish that starts with an A i made a thread about it and they are bad they eat your zoa's and such

[OrionN]

I got lots and lots of stars like that in my tank and they don't bother a thing.

[Aquarium masters]

The third and fourth pictures look like a tunicats. Do they look the same as each other?

[jroescher]

Look up Asterina Star. There are lots of different kinds, and many that look identical. I had a few for years, then suddenly the population exploded and I lost all my coralline.

Some people have no problems with asterinas, others they can be a nightmare.

[JimD]

Asterina stars and Stomatella snails... The snails are good, the stars have been a topic of controversy... Lots of info out there...

[Andrew v.s wild]

The third and fourth pictures look like a tunicats. Do they look the same as each other?

yea they do look the same as each other

[brewercm]

If the stars do start bothering anything coral wise you could always get a halequin shrimp and they'll make short order of them. Of course if you have any other stars they'll be history too. Once they've eaten them you'll need to feed them and most people tend to use choc chip stars for their main diet. Other than that you can just pick them off when you see them.

[OrionN]

I agree that there are multiple species of these stars and they have different diet. They don't multiply that fast. If you put your mind into it, you can remove them manually in short order.