On the basis of language, customs, and other traits, the Tajiks can be subdivided into a number of distinct groups. The Pamir Tajiks within the Gorno-Badakhshan autonomous region include minority peoples speaking Wakhī, Shughnī, Rōshānī, Khufī, Yāzgulāmī, Ishkashimī, and Bartang, all Iranian languages. Another distinct group is formed by the Yaghnābīs, direct descendants of the ancient Sogdians, who live in the Zeravshan River basin.
So closely are the Tajiks mixed with neighbouring Uzbeks that the Soviet partition of the area in 1924 failed to segregate the two nationalities with any degree of thoroughness. With nearly one million Tajiks in Uzbekistan and more than one million Uzbeks in Tajikistan, these nationalities remain in intimate, though not always friendly, interrelation. The country’s other ethnic groups include Russians, Tatars, Kyrgyz, Ukrainians, Germans, Jews, and Armenians.