ID Stringy thing in rock ?

[Felix T Cat]

Ok, anybody ?. It seems to be confined to one rock in my tank. The strings come out and dangle around but retract into the rock as well.

 

[IvanaO]

What you are seeing could be the tentacles of a spaghetti worm.

 

[havoc519]

definitely a speghetti worm.

 

[Felix T Cat]

Great, thanks. That actually helped me to id some other worms I had in the tank that are building tubes outside of rock holes.