During a survey of Gahar Lake and Gahar River from 2008 to 2009 some specimen obtained by seasonal sampling in 6 stations, 3 stations in the lake and 3 stations in the river. Three different methods were used for sampling, gill net and hook in the lake and electrofishing in the river. Due to the results 3 species from 2 families in Gahar Lake and 12 species form 3 families in Gahar River were identified. Most of the fish species belonged to Cyprinidae and Salmonidae families. Distribution and abundance of species were recognized. Oncorhynchus mykiss in Gahar Lake and Capoeta damascina in Gahar River had the most abundance.