Daphnia magna – Water Flea Culture
Daphnia are one of the most ideal live foods for micropredators and are easy to culture in the home aquarium.
Daphnia magna, also known as Water Fleas, are small, kidney bean-shaped invertebrates native to rocky pools along the Atlantic coastline of the northeastern United States. Many species are also found in brackish and marine habitats. They are filter feeders and thrive in green water conditions, consuming zooplankton and phytoplankton. In aquariums, Daphnia serve as an excellent food source for micropredators and can enhance vibrant coloration and spawning behaviors in fish.
Daphnia reproduce both sexually and asexually. Females can produce offspring without mating, allowing rapid population growth under suitable conditions.
| Specification | Value |
|---|---|
| Species | Daphnia magna |
| Size | Approx. 2-4 mm |
| Reproduction | Sexual and asexual |
| Environment | Green water, stable temperature |
| Lifespan | Up to 6 weeks in optimal conditions |
FAQ
How long does it take for Daphnia to start reproducing after introduction to the aquarium?
Daphnia typically begin reproducing within 3 to 5 days after introduction, depending on water temperature and food availability.
Can Daphnia be kept in a freshwater aquarium with fish?
Yes, Daphnia can be safely kept in freshwater aquariums with fish, especially micropredators such as neon tetras or guppies.
What kind of water conditions do Daphnia prefer?
Daphnia prefer stable, warm water with moderate pH and green water conditions to support their filter-feeding behavior.
Deirdre James –
I’ve been keeping Daphnia in my 10-gallon tank for two months now. The fish are more active and their colors have brightened significantly. Easy to maintain and they reproduce quickly. Perfect for feeding small fish.
Irene James –
The package arrived quickly and the Daphnia were healthy when received. I added them to my community tank and noticed a noticeable improvement in my guppies’ behavior. A great addition for any small aquarium.
Joseph Short –
This is the first time I’ve tried live food for my fish. The Daphnia are easy to care for and seem to thrive in my tank. My fish are now more active and eating regularly. Highly recommend.