Oprelian amoeba

The Oprelian amoeba was a type of unicellular lifeform. They fed on paramecia.

In 2377, Q briefly turned his son into an Oprelian amoeba as a punishment for his inappropriate behavior. He then informed Q Junior that the Q Continuum would see him exist as an amoeba for eternity unless he changed his ways. 

Oprelianische Amöbe Oprelian amoebe