ABSTRACT
Magnetic energy controls on a Sot of cosmic phenomena, as well known that the magnetic properties are not confined to iron and manganese, but a feature associated with all solids, liquid and gas, as well as all life.This research was conducted to identify the effect of magnetic water treatment in various intensity [500, 1000 and 1500] gauss in some aspects of life for the Iraqi fresh water ostracoda Cyclocypris cruciata Furtos 1935, which is an important component of the food chain in the waters.The samples of Ostracoda were collected from Al-Habebsa lake in Baghdad governerat by using sieve with mesh sized 75 micro m and zooplankton net with opening diameter about 25 cm and mesh size 335 micro m.Results were compared between the control animals that live in the natural waters with those treated with three different magnetic intensities. Research has shown a significant increase in the growth rate of the length and width of the shield for each male and female of the ostracoda with the increases in the intensity of magnetic water treatment, especially in 1500 Gauss.As well as, get a significant increase in the fertility of animals with the increases of magnetic intensity, also increase in the number of eggs and diameters per female treated compared with control.While sex ration didnet shows any differences between the control and water treated animals