Coloured scanning electron micrograph (SEM) of Freshwater copepod (Diacyclops thomasi). Diacyclops thomasi (also known as Diacyclops bicuspidatus thomasi) is a freshwater copepod in the family Cyclopidae. It is a cyclopoid copepod present in freshwater zooplankton and important in the aquatic food chain. D. thomasi is an omnivorous copepod that preys on microplankton. It is distributed in lakes throughout the world. Magnification x30 when shortest axis printed at 25 millimetres.
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