Biological characteristics of small-scaled scorpion fish in coastal waters of Sevastopol in modern times

The article presents the analysis of parameters biomonitor species ‒ small-scaled scorpion fish at dif-ferent organization levels as part study current status and their habitat conditions in a coastal zone Sevastopol. In spite similarity size mass values caught different bays there has been found regularity size: Balaklavskaya Bay > Kruglaya Streletskaya Bay. indexes gills liver Scorpaena porcus from were higher older group compared to those other water areas, which was considered an adaptive response unfavorable conditions. At same time, high hepatosomatic index, weight, glucose content blood this benthic indicated better natural food supply. Thus, studied often differed slightly, proves similar living satisfactory state Sevastopol today. This also evidenced by results more sensitive - morphometric gills: length width filaments, well density distribution on gill arch did not differ significantly bays. However, comparing inter-annual changes population it that species, especially females, decreased 2021 2017–2019. weight 8–10 g, 20 individuals weighed almost half much previous years. conducted bioindicative studies have showed deterioration ecological areas Crimea.