A total of 83 living Tilipia nilotica were bacteriologically exami ned. The obtained results revealed the detection of 235 bacter ial isolates. Of these 91 (38.72%) were recovered from the surface, 81 (34.46%) from the gills and 63 (26.80%) from the intestine. Out of the bacterial isolates, the following species were met with: 2 Haemolytic strepococci, 42 Enterococci, 66 Coagulase +ve and -ve Staphylococcus aureus, 108 Enteroba cteria, 13 Pseudomonas fluoresence, 1 Listeria monocytogenes, 1 Erysipelothrix insidiosa and 2 Clostridium perfringens.
The animal and public heath significance of the recovered strains were discussed.