Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Daphnia

Water flea - Daphnia Daphnia - female Daphnia - female Daphnia Crustacean ? - Daphnia Crustacean ? - Daphnia Tiny Crustacean - Daphnia Daphnia catawba - Daphnia
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Branchiopoda (Branchiopods)
Order Diplostraca
Suborder Cladocera (Water Fleas)
Infraorder Anomopoda (Anomopods)
Family Daphniidae
Genus Daphnia
They are suspension feeders, that is they feed on small suspended particles. planktonic algae, bacteria.
Life Cycle
They are parthenogenetic in the spring. They lay eggs into the brood pouch, placed dorsally. The embryos develop in the brood pouch and are born live. When conditions get harder, they produce "resting eggs" with a protective casing; these can last the winter (NCBI Introduction to Daphnia Biology).
They are used in research. They serve as food for small fish.
Internet References
NCBI Introduction to Daphnia Biology