What is this!?!

[Tash6000]

My hermit crab seems to have some type of animal/parasite attached to the back of its shell.
It has two long feelers and it's body is about the size of a pin head. It picks up the substrate and brings it up to its body.. presumably eating?
I have no idea what it is and not sure if it is harmful. I don't currently have fish in my tank as I'm letting it cycle although all levels are now completely stable. I noticed this critter about a week ago and decided not to introduce fish until I know it's not harmful.
See attached picture.. hopefully you can see it as it's tiny!

 

[Rover88]

IT looks /kind of/ like a tube worm? Or a type of pod?

https://www.lionfishlair.com/hitchhikers-guide/

Search 'Tube Worm' on this and see if that looks right?

 

[mcgyvr]

spionid worm maybe..
Hard to see much from that picture..

It would help to see the backside

 

[Tash6000]

Hi, thanks for your reply! It looks somewhat like a tube worm but I'm not 100% sure! Maybe it will grow and become easier to identify.
I will try and get a better pic of it when my crab decides to move so I can get a better view/angle for photo.

 

[Tash6000]

Maybe this is easier to see?

 

[mcgyvr]

Not really easier to see..

No matter I will guarantee its not a harmless creature whatever it is..
Enjoy it..

 

[crawlerman]

I'd vote spionid worm

 

[Tash6000]

Thanks guys!
It's a very interesting little thing. Think I've spent a good hour or so just staring at it haha!