Research on fish diversity in the Cikaniki River, Bogor was carried out in March - June 2019. This study aimed to obtain a Fish Species Diversity Index and Type of Disorders related to Environmental Factors. Selection of the overall selection station (based on purposive sampling) is based on consideration of the representation of the negotiation situation. The diversity of fish species in the Cikaniki river is relatively moderate with a diversity index of 1.67 and high population diversity with an evenness index of 1.83. Fish species Nemacheilus chrysolaimos, Puntius binotatus, and Glyptothorax platypogonoides that oppose the Cikaniki River Index Various types of low value indicate rivers. The most challenging environmental factors are temperature, Biological Oxygen Demand, and Total Solid Suspended with consideration of 0.785.

Keywords: Diversity, Fish, Cikaniki River