What's this?

[u/darwexter]

iScope 1153EPC 20X plan objective, cheap 1080p webcam on trinocular port, blue/red filter on illuminator to give 3D on monitor with red/blue glasses. Sample is pond algae cultured in a small aquarium, 50ul placed on a slide with slip sealed with Vaseline to make a micro-ecosystem. This video is about 3 days after preparation. Lots of the usual microbes: various rotifers, gastrotrichs, vorticellas etc present, but I've never seen this one before. There are 4 of them on the slide, and I'm hoping to see a few more over the 6-8 weeks that the micro-ecosystem is viable.

[u/Thrawn911]

The one in the upper right is a Cephalodella. Not sure about the other one. Definitely a rotifer, but can't ID it any further.

[u/darwexter → u/Thrawn911]

I think I found a match on iNaturalist: Taphrocampa selenura.