Anyone have an idea what this might be?

[DDenny]

After completing a water change this afternoon I saw this crawling along the glass. It’s about a 1/4” long or so and thin. Still researching and I can find anything. It’s on the glass moving just like snake would.

 

[Soren]

Look up dorvilleidae worm to see if yours is a match. It appears possible to me from your image.

 

[DDenny]

That matches pretty darn close. First time I’ve see one in the tank. I took it out not know what it was. Might have been a mistake but if there is one there is probably more I would guess. Thank you

 

[Manny D. Mandarin]

Look up dorvilleidae worm to see if yours is a match. It appears possible to me from your image.

I think you're right with the ID!