The specimen was gathered in a pond in the forest of Altenholz-Stift near Kiel. Sampling date 5/2017. indicates 25 µm.
The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.
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Wolfgang Bettighofer, www.protisten.de.