“…These are not, however, places on the borderline between fresh and saline waters, but sections of rivers heavily polluted with salts [ 10 ]. In fact, for several decades, there has been an increasing level of salinity in large sections of inland waters created by anthropogenic activities, such as mining, metallurgy, and chemical industries, and as a result of the runoff of highly saline water from stormwater networks during the winter [ 1 , 47 , 48 ]. Point or sectional salinity is not without influence on the biocoenoses of local water bodies, including the resident ichthyofauna [ 1 , 10 , 13 ].…”