Does anyone know which group the smaller unicellular organisms belongs to ?
Video with 2.5x objective :
https://youtu.be/ndCV4gtlMB0
First image normal shape 25x crop
Second image slightly squashed under coverglass
Dear straightlight,
the smaller unicellular organisms belongs to the group Chilodonella, perhaps Chilodonella uncinata. The size of this little ciliate is only 50 - 90 microns.
I hope, this will help you.
Thanks thats seems to fit. Lots of information on infected fish for these not so much on them as free living critters.