EN
Mycoflora developing on the living and dead specimens of eleven species of molluscs were investigated under laboratory conditions. Sixty zoosporic fungus species were found to grow on the specimens investigated, including 2 chytridiomycetes, 57 oomycetes and 1 zygomycetes fungus. Out of these 60 species, 32 are known as parasites or necrotrophs of fish. On the living specimens of investigated molluscs were found to grow 25 species of fungus. Two fungus species were recorded for the first time from Poland.