Daphnia are small, planktonic crustaceans, between 0.2 and 5 mm in length. Daphnia are members of the order lt Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas because of their lt saltatory swimming style. They live in various aquatic environments ranging from acidic swamps to freshwater lakes, ponds, streams and rivers.
Daphnia magna is quite big, up to 0,5 cm and round shaped.
This daphnia is extremely small, just around 1 mm.
Moina are small crustacean, from 0,5 to 1 mm and are very similar to daphnia. They swim extrmely fast and restelessy, therefore it is extemely difficult to take macro pictures. Unlike daphnia they usually swimm close to the surface.
Simocephalus sp. are large, 3-
A very unique red simocephalus, quite big, up to 4 mm.
A very strange and big simocephalus. White and not transparent. Up to 5/6 mm.
Extremly small round crustacea, less than 1 mm. Swims very fast in the upper column. Feeds on alga.