Ciliophora is a group of protozoans. Most ciliophora are free living, but some are commercial or parasitic, they have a great tolerance capacity of environmental pollutants and thats way many scientists consider them as water indicator. They are distributed all over of the world and generally range from 10 µm to 3mm long. The free living ciliates are characterized as zooplankton, and are consider as fish consumption. In this study two sampling sites were selected during 15August 2011. The selected sampling stations were Gori Gol Lake and El-Göl Lake. The sampling was carried out 15 Cm below the surface of water. In the present investigation 12 species from 9 genus were recognized. The maximum population density was recorded for Vorticella microstoma, Vorticella striata and paramecium caudatum respectively in Gori Gol Lake. While in the El-Göl Lake, the maximum population density was belonging to Coleps hirtus. It seems that the El- Gol lake is more polluted than Gori Gol lake.
