The reported study has been undertaken to check about Two hundred freshwater fish samples from Kafr –Elshiekh and Al-Behera farms and Twenty Samples from sablah as fish farm feed. We isolate Vibrio Species from fish and sablah and found that there are 3 strains from vibrio common between fish and sablah ( V.anguillirum, , V.vulnificus , and finally V.Parahaemolyticus) which is the more dominant strain between fish and sablah samples. Also we apply ERIC-PCR finger print of random samples of vibrio
parahaemolyticus isolated from fish (Oreochromis Niloticus ) and Sablah to show the similarity of both. the result showing that there is a minor role of sablah as fish farm feed in transmission of vibrio Parahaemolyticus to fish farms which eat infected sablah ( only one sample are similar between fish and sablah) about (10%)only. Although the sablah is not the main cause in spread of vibrio Parahaemolyticus infection in fish. Yet, it plays a more or less important role in infection of fish with the bacterium that will require more studies and new searches.
Key words: Oreochromis Niloticus, Vibrio parahaemolyticus ,ERIC-PCR, Sablah.
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