Please identify

[ms122]

https://youtu.be/cFztUSJX-9U
Could anyone please help me identify this?
They seem to move around by crawling around spirogyra algae

[DonSchaeffer]

Looks like algae. If it moves it's cyanobacteria.

[Peter]

Hi ms122,
They look something like Spirotrich however they appear too small and too transiently for any one but a true expert to identify.
Peter.

[Bruce Taylor]

The shape and behaviour are consistent with Aspidisca (a very common euplotid ciliate). However, we don't see enough detail for a reliable identification. For better contrast, try closing the condenser diaphragm a bit more.