What is it??

[coralwolf]

I was admiring the tank the other night and I noticed a small worm like creature sticking it's head out of a hole in one of my LR's then suddenly it spit out what looked like white smoke from it's head which left a large cloud for a few minutes.
Does anyone know what this is and can it hurt the tank?

 

[fulcrum]

I seem to recall someone saying this is a peanut worm.
I have seen a couple in my tank.
I'd get a more credible opinion on whether they are harmful or not, but I have not seen any detriment.

 

[coralwolf]

Do Peanut Worms spew out a white smoke (like) stuff?

 

[toddpolish]

my guess is that it's not harmful at all. I have them too.

 

[tangman99]

I have several peanut worms in my tank, but I have never noticed them emitting any kind of white stuff. Does it unroll itself to reach things? Kind of like a sweater sleeve being pushed out if it is turned inside out. That is how peanut worms extend themselves.

 

[coralwolf]

I'm not sure how it extends itself as I've only seen it twice. If I can get a picture of it I will post it.
Thanks