What is this

[Ndirish21]

There underneath my live rock. They move around and only come out with the light on it seems. I see about five of them. In the picture it's on the bottom left. Please help

 

[Ndirish21]

Was thinking maybe bristle worm?

 

[Convict2161]

An arm to a brittle star?

 

[carried]

I say +1 to arm of a bristle star.

 

[smithce79]

Its a bristtle star. This is how they look in my tank


View attachment 108746

 

[Ndirish21]

R they okay In the tank or should i get them out?

 

[Convict2161]

I have one also (that I know of)

 

[smithce79]

R they okay In the tank or should i get them out?

You can keep it, not bad for fish or corals, but be carefull with the green ones somebody told me that they can be dangerous for corals when there is not enough food for them.