Some type of worm ID

[q8cyu]

I was looking at the tank and I found this worm on the glass. It is extremely small; maybe a few milimeters in length
It looks like a small white worm when in the tank with the blue lights but in white light looks darker and under microscope almost like a blueish with a tiny bit of yellow on the head and red speckled around.
I’ve been trying to look online for a bit but I haven’t found anything that looks like it.
So far I have only found one.
Thanks in advance.

Edit: I was looking and found Dorvilleidae worm. Could that be possible.

 

[TeeSquared1214]

Potential baby bristleworm? I’m new to the hobby but this is my first thought. Someone with more experience might be able to provide better insight?

 

[C. Eymann]

Syllid worm I believe, a ton of different species, some can cause harm to inverts, molluscs and corals where as other species don't seem to cause issues.

 

[EeyoreIsMySpiritAnimal]

Awesome photos!
Sorry I can't help ID.
@ISpeakForTheSeas

 

[ISpeakForTheSeas]

Awesome photos!
Sorry I can't help ID.
@ISpeakForTheSeas

Bah, I knew I missed a tag somewhere - sorry.

Edit: I was looking and found Dorvilleidae worm. Could that be possible.

Looks like it has four tentacles on its head, so I'd say Dorvilleid worm is likely, yeah. Should be harmless/beneficial.