Culture of fish food organisms (1+1)

Unit 3 - Cladocerans

3.2.1.Daphnia
The most commonly known genus is Daphnia (freshwater fleas), which is the most researched in this group, and Moina. Cladocerans are free-swimming organisms, and most orientate themselves with dorsal side up. The head is typically separated from the body by a deep indentation, but also may not be separated. It projects forward as a beak or rostrum. On the forehead is an unpaired compound eye, a result of two fused eyes, and, in most species, a simple naupliar eye.