Observed hunting/killing coepodes. Contracts tentacles inward. Two individuals, adhered to glass and one to rock. Size is smaller than a pencil eraser.

Lake Champlain sourced water and subrates from various locations.

by stonedecology

3 Comments

  1. stonedecology

    A predatory Ciliated Protozoan seem most likely.

  2. These are Charchesium sp. which are in the family Vorticellidae but a different genus than Vorticella. Charchesium sp. are true colonial peritrichs (they share stalks) whereas vorticella have pseudo-colonies and are usually found in groups but each have individual stalks. These are both filter feeders that eat on bacterium, detritus, and other smaller organisms. 🙂 Hope this helps!

  3. GenJanSmuts

    It’s Champ’s offspring in an early stage of growth

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