noun
- a small freshwater crustacean with a transparent body, commonly used as fish food and in biological research
Usage: biology
Examples
- The aquarium store sells live daphnia as food for tropical fish.
- Students observed daphnia under the microscope to study their heart rate.
- Daphnia are filter feeders that help keep pond water clean.
- The biology lab cultured daphnia for use in toxicity experiments.
- Fish keepers often breed daphnia as a nutritious live food source.
- Daphnia populations can indicate the health of freshwater ecosystems.