What is this?

[random_name_2]

I’m not sure what it is. It could be a starfish of sorts? Asterina?. Is it harmful and how do i remove it if so?

 

[JTP424]

Asterina Starfish!!
If you see one... there's probably 5 more hidden somewhere.
I would remove out of caution. SOME have been known to munch on corals.
I have a bunch in my system but they don't seem to cause much harm.

 

[random_name_2]

Asterina Starfish!!
If you see one... there's probably 5 more hidden somewhere.
I would remove out of caution. SOME have been known to munch on corals.
I have a bunch in my system but they don't seem to cause much harm.

What’s the best way to euthanize or dispose of it?

 

[paraletho]

Asterina Starfish. They reproduce by dropping an arm which becomes another. Sometimes reaching plague numbers. I have never had any problem with them but some hobbyist have said they will eat zoos.

 

[JTP424]

Literally pull them out of the tank. Throw them outside or in the trash.

 

[underground_corals]

Asterina Starfish they multiply like crazy!

 

[BryanM]

I have seen one in my tank, thankfully that's all I've seen, so I leave it be.

If I started seeing lots of babies I would get them gone.

 

[Bleu 3D]

Like others have said here, it's an Asterina Starfish. Pull it out gently to keep it from dropping any arms and throw it away.