When I first looked at my Micro-Aquarium, I noticed that it still had air bubbles around the plants. I also noticed that the water level seems to have gone down a bit.
As I started at the bottom, near the soil area, I saw 4-5 of the same worm-like organisms that I have seen the last two observations. I attempted to get a photo but they were still moving too fast. There seems to be more of these than I had previously noticed. I could not identify them without a still picture but believe they are nematodes.. Again, I saw a great deal of the algae and oscillatoria from the last couple weeks.
I saw many clear blobs with flagella and a couple fast moving rotifers. I didn't find anything new until the end of my observation period. At that point I noticed a clear, amoeboid structure with cilia all around it. It was very still and then suddenly darted out of view. I was able to locate it and noticed it had a vacuole that was pulsing in the lower region. We were able to identify it as a Cyclidium from Fig. 331, on page 149 of:
Patterson DJ. Free-Living Freshwater Protozoa. Manson Publishing Ltd: London: 1992.
Most of the action in my Micro-Aquarium has slowed down and the organisms are eating each other. The Vorticella and Difflugia that I previously observed could not be found and the numbers of other unidentified organisms has diminished. This source of water held many different types of organisms and forms of biological diversity.
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