Encyclopedian Dictionary ( Aquaculture ): Freshwater Micro-Organism

Larger image (Magnified above at 40x)
Algae

Another freshwater critter of curiosity I caught dancing around among the algae. Though its green like algae, it moves about on its own. A noticeable feature, was the bright reddish spot...

Sharon wrote: I noticed on your page you have a very similar phytoplankton to the one I found.

But it is not the same species. I want to identify the species. Mine has a red dot on it, which looks like an eye, but I do not believe it is in an eye.

Please can you help me to identify this species?

Thank you, Sharon Mooney

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It's almost certainly a euglenoid.

IF it was flexible in motion (e.g., the cell body itself flexible, not just the flagella), it is almost certainly a member of the genus Euglena.

The red spot is in fact an 'eyespot' - it's a very primitive eye that allows the euglena to detect light -- a big advantage for a mobile photosynthesizer.

Dr. Rochelle Sturtevant
Extension Educator
NOAA
Great Lakes Sea Grant Network
Great Lakes Environmental Research Lab

Heres the same magnified by combination of microscope and camera
Algae

Large Image

Algae

Photos and Video of Euglena, Page One
Photos of Euglena, Page Two
Euglena Images, Page Three

Euglena Images, Page Four

NC Freshwater Fish
Brook Trout, Salvelinus fontinalis	Rainbow Trout, Salmo gairdneri (=Oncorhynchus mykiss)	Largemouth Bass, Micropterus salmoides	Bluegill, Lepomis macrochirus
Red-ear sunfish, Lepomis macrochirus	Common carp, Cyprinus carpio	Nile Tilapia, Oreochromis niloticus	Blue Tilapia, Oreochromis aurea
Black Tilapia, Oreochromis mossambica	Hybrid Striped Bass Morone saxatilis X Morone chrysops based on Species.
Bait Species
Golden Shiner Notemigonus crysoleucas	Fathead Minnow Pimephales promelas	White Sucker Catostomus commersoni	Goldfish Carassius autatus
Further Reading
Fundamentals of Aquaculture James W. Avault, Jr., Ph.D. Avault, 1996	Pennak's Freshwater Invertebrates of the United States Douglas G. Smith Wiley, 2001	Ecology and Classification of North American Freshwater Invertebrates Thorp, Covich Academic Press, 2001	Freshwater Algae of North America: Ecology and Classification Wehr, Sheath Academic Press, 2003
Zooplankton of the Atlantic and Gulf Coasts Johnson and Allen John Hopkins, 2005

Freshwater Micro-Organism

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NC Freshwater Fish

Bait Species

Further Reading