page_title: Daphnia
section_title: Conservation
hierarchical_section_title: Daphnia / Conservation
caption_attribution_description: Experiments with Daphnia magna, the water flea, show that traditional extinction models may be underestimating extinction risk.
context_page_description: Daphnia, a genus of small planktonic crustaceans, are 0.2–5 millimetres in length. Daphnia are members of the order Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas because their saltatory swimming style resembles the movements of fleas. Daphnia live in various aquatic environments ranging from acidic swamps to freshwater lakes and ponds.
  The two most readily available species of Daphnia are D. pulex and D. magna. They are often associated with a related genus in the order Cladocera: Moina, which is in the Moinidae family instead of Daphniidae and is much smaller than D. pulex. Daphnia eggs for sale are generally enclosed in ephippia.
context_section_description: Several Daphnia species are considered threatened. The following are listed as vulnerable by IUCN: Daphnia nivalis, Daphnia coronata, Daphnia occidentalis, and Daphnia jollyi. Some species are halophiles, and can be found in hypersaline lake environments, an example of which is the Makgadikgadi Pan.
caption: Daphnia magna
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