Kuban barbel and Kuban nase are the only species of their genera within the Kuban basin. They prefer mountainous streams with a rapid flow and sandy or rocky bottom on which they spawn. After the construction of the Krasnodar Dam in the 1980s, the Kuban barbel became rare in the lower Kuban. On the contrary, Kuban nase moves downstream to lower sections or larger tributaries in winter. It is rather sensitive to the water quality, especially turbidity. Its population also declined after the construction of the Krasnodar Dam, but is still large in the middle and upper parts of the Kuban and its tributaries.