Please help me identify these worms!

[galacticfern]

I found these in my gravel. There’s been no new additions to the tank for about 9 months, but I’ve never seen them before. Possibly tubifex, red worms, or camallanus? Or something else?

 

[Bruce Leyland-Jones]

Am I right in thinking that these are segmented, like teeny-tiny earthworms?
If so, then they're probably annelids, commonly called detritus worms...a consequence of over-feeding and too much waste in the gravel.
Harmless to fish and even edible.
Cut down on feeding them and their numbers should decrease.

 

[JazzyV]

I’m guessing yes cuz it doesn’t look like any other worms