Pathological studies on some parasitic diseases of Eel (Anguilla anguilla ) By

SUMMARY The prevalence of pathogenic parasites (single or mixed infection) was 22 out of 65 eels (33.85%). The identified parasites were Anguillicola cras- sus (7 cases) (10.7 %), Dactylogyrus species (4 cases) (6.1 %), Pseudo- dactylogyrus species (5cases) (7.7%), Myxidium species (2 cases) (3.07%), Trichodina species (3 cases) (4.6 %), and Proteocephalus spe- cies (one case) (1.5 %). It could be concluded that the parasitic fauna markedly impairs the Egyp tian eel's production and produce mild to severe degenerative, necrotic and inflammatory changes in the affected organs.