Ventral view of Daphnia Adult females. On the left, a photograph of Daphnia longispina from a rock pool population in southern Finland. On the right, a drawing.
Daphnia magna is a small planktonic crustacean (adult length 1.5–5.0 mm) that belongs to the subclass Phyllopoda. It inhabits a variety of freshwater.
Daphnia, a genus of small planktonic crustaceans, are 0.2–5 millimetres (0.01– 0.20 in) in length. Daphnia are members of the order Cladocera, and are one of.