Fish, alga and another sensitive to pollution biological organisms do not leave habitual places yet. However, seriously dismay the bacteriological characteristics of some rivers. Bacteria devastatingly affect the health of people. As to the level of such diseases spreading as typhoid, malaria and diphtheria, the republic occupies the pioneering place among of states of Aral sea basin. Malaria in Dushanbe increased 300 times, in Khatlon region 76 times, in Leninabad region 54 times.
Water resources are important for fish production.
Generally the fish catches were more than 3 times reduced in 1997 as compared with 1990.