Correlation Between The Development of Saprolegniosis in Cyprinid Fish and The Bio-Ecological Status of Reservoirs (A Case Study of The Samarkand Region)

This article presents the findings of a research study conducted between 2024 and 2025 on the etiology and prevention of saprolegniosis in cyprinid fish within fish farms of the Kattakurgan district, Samarkand region. The authors of the study single out the following environmental stress factors as the major ecological factors that cause the onset of the Energy Deficiency Syndrome and the following occurrence of saprolegniosis in fish: water acidity (pH 5.5–6.3) and deficiency of dissolved oxygen (5.23–6.3 mg/L).Moreover, the paper elaborates bioassay techniques applied to test stress resistance of fish population.The guidelines on the optimization of fertilization processes and feeding systems in reservoirs are offered scientifically, being effective preventative measures of curbing disease outbreaks.