Fauna and ecological groups of mollusks in reservoirs of Uzbekistan

In the Chimkurgan reservoir there are 11 species and 2 subspecies belonging to 4 families. 11 species of mollusks belonging to 6 families were found in the Qoratepa reservoir. 5 species of Corbicula cor, C. fliminalis, C. purpurea, Corbiculina tibetensis and C. ferghanensis distributed in the Chimkurgan reservoir are eurybiont species and 9 species are Sinanondonta gibba, S. orbicularis, S. puerorum, Colletopterum ponderosum volgense, Euglesa bactrianum, C. syreum sogdianum, Odhneripisidium sogdianum were found to be stenobiont species. Corbiculina tibetensis and C. ferghanensis in the Qoratepa Reservoir have been studied as common eurybiont species, while the remaining species are stenobiont species.