A genus of the genus Daphnia.

common water flea, often cultivated as food for fish.

The ‘water flea,' common crustaceans found in freshwater lakes, ponds, and slow moving streams. Cultivated or collected in the wild as fish food.

minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae

Daphnia, popularly known as water fleas, are small crustaceans that live in fresh water such as ponds, lakes, and streams.

Crustaceans in the genus Daphnia. Also know as Water Fleas.

genus Daphnia; small freshwater crustaceans.

A tiny, and abundant, aquatic crustacean. Also known as water fleas, though unrelated to the true fleas, with are insects.

Daphnia are small, mostly planktonic, crustaceans, between 0.2 and 5 mm in length. Daphnia are members of the order Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas because of their saltatory swimming style (although fleas are insects and thus only very distantly related). They live in various aquatic environments ranging from acidic swamps to freshwater lakes, ponds, streams and rivers.