Please identify this phytoplankton.

[Bruce7]

Please tell me what species of algae this is. It's the two big circles in the middle of the picture. This algae seems to be larger than the one I had before. Is this algae too large for rotifers to eat. The magnification is 600x. Thanks for any responses.

 

[TangerineSpeedo]

This might help you.
https://www.maine.gov/dmr/sites/mai...lanktonIdentificationGuide6-DMRGuideat10x.pdf

 

[Bruce7]

This might help you.
https://www.maine.gov/dmr/sites/mai...lanktonIdentificationGuide6-DMRGuideat10x.pdf

Thanks for your response.