In this video we see some small flagellates about 10um long.
We find them in a jar of freshwater among Elodea algae.
They have two unequal flagella at its anterior end.
Its body has a central depression
It moves by turning onto itself
Are very active and voracious.
Through the invaluable help of David Patterson:
http://www.itcamefromthepond.com/2014/0 ... patterson/
We know that they belong to the genus Paraphysomonas.
Paraphysomonas are covered with scales or spines siliceous not visible under the optical microscope.
Phase Contrast, inmesion 100X objective.
Free network sound effects
Analog camera Sony DXC950
Link:
http://www.youtube.com/watch?v=6IJTj3kQCvg
Regards
carlos
Paraphysomonas flagellates
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A chrysophyte! I would never have guessed that. 

It Came from the Pond (Blog): http://www.itcamefromthepond.com/
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