Planaria?

[CIC]

I have recently in the last week noticed small white worms on my glass and am worried that they may be planaria. Any opinions, please?

 

[Aiken Drum]

Cant see to clearly on your photos but planaria have a triangular shaped head.

 

[CIC]

Hiya!

Thanks for this! They are so tiny it really is hard to say and even harder to get a clearer picture - even with a magnifying glass up close. They do seem to have some sort of a “head” on them, although they are far too small to determine the shape.

 

[Autumnsky]

Here is a pic with very young / small Hydra. They look similar to what a Planaria might at first glance but they have little arms tentacles, and otherwise you can clearly see the head on the other pic from Aiken Drum.

https://www.amazonasmagazine.com/2015/09/11/silent-baby-fish-killers-freshwater-hydra/

If it is either this info may help
https://www.aquariumadvice.com/forums/f129/planaria-and-hydra-liquid-treatment-243568.html