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Chaetonotus sp.
Species name:Chaetonotus sp.
Bureau Swerage, Tokyo Metropolitan Government
The size of Chaetonotus is about 220 μm in length. The body is ovoided. The tail dives into two. They are covered with cilia and the head’s cilia is very long. They glide fast. The food source are dead bodies of micro-organisms and filamentous alga.