I don't know what this microorganism is called. That's why the title of this video is so weird. Unfortunately, I don't have access to any reliable source describing microorganisms. And I don't want to mislead anyone. I suspect that there will be many more such titles in my videos..
Found in a sample of fresh water. I don't have access to another one
The microscope is CZJ jenaval.
Best regards
Maciej