Need ID please! Photo inside!


Team RC
What is this thing in the picture? Looks like there are multiple white tentacle with black spots coming out of the rock. It's been there since I put the rock in the tank a week ago. Any ideas?...




Team RC
Anyone else have opinions? I thought it might be a star, but I don't know how they got in the rock like that.


Moderator Emeritus
Premium Member
That would be my guess also. They hitchike on the rocks. If you have a couple you probably have a ton of them. They are already full size. Get a flashlight and check it out at night. You may see all kinds of fun things.


New member
are they tentacles or are they hard calcium tubes with tentacles coming out of them? if hard tubes, polycheat worms. (feather dustes)
if tentacles, then i dont know?


Staff member
RC Mod
They're fine. It almost looked a little like crab legs, but if you say they flex, they're likelier something like a harlequin brittle star. Green brittle stars are bad news. The black and white banded are nicer.


Team RC
Thanks everybody. Yeah, they definitely sway in the flow. Almost like it's out grabbing plankton in the water column or something.