What is this thing? Nem , worm

[Mbbenz89]

Hey R2R gang, recently noticed this thing coming out at night and now there is a second one , we have not added anything to this tank in wel over 6 months as we’ve been focused more on our big tank and just maintaining this one. I used to just sit and stare at this tank for hours a day and I never noticed it and now it has like blueish tenticles and like a green center . Kinda looks like an anemone but have no idea, anyone seen these?

 

[Tired]

Looks anemone-ish, but hard to tell in those colors. Can you get a photo under white lights?

 

[fishski13]

picture under white light would help

 

[Labridaedicted]

Called a ball anemone. Common hitchhiker that can become problematically invasive in the right condition. I always thought they looked cool, though.

 

[Mbbenz89]

Looks anemone-ish, but hard to tell in those colors. Can you get a photo under white lights?