On October 7, 2012 my micro aquarium was full of tiny organisms swimming around feeding on ever morsel available. One particular organism as the one shown above is a Rotifer called Colurella uncinata sp. these organisms have no blood circulatory system. The mouth is accompanied by cilia that help guide the food into the mouth. Towards the bottom of the organism there is a horn like structure where there would be a tail. At the tip of the tail it attaches to the food source or any structure and the organism stays stationary to feed on its desired meal (Donner).
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