Modern System Approaches to Diagnostics of Sturgeon Fish Diseases in Installations of the Closed Water Supply

The article proposes systematic approaches to control and maintain the well-being of aquaculture enterprises that contribute to the sustainable development of industrial fish farming systems. The results of pathologies monitoring that occur in sturgeon fish kept in closed water supply installations are presented. It was found that almost all fish species had clinical signs of various diseases – hyperemia and erosion on the gill covers and fins, ascites and swelling of the mouth. During complex bacteriological studies of the fish with disease, in a number of cases the causative agent of aeromonosis was identified such as Aeromonas hydrophila, Aeromonas veronii, Aeromonas caviae, as well as Pseudomonas anguilleseptica, Citrobacter braakii, Streptococcus parauberis, parasitological – ciliates of the Chlamidodontidae family. The histological studies of parenchymal organs of the fish with disease carried out in this case made it possible to more accurately determine the causes of the disease in the early stages, which makes it possible to systematize the assessment of diseases of sturgeon species and provide a strategy for maintaining the well-being or improvement of fish farms.