Identification of the isolate: The isolated strain JKl was subjected to taxonomic analysis based on Bergey's Manual of Systematic Bacteriology and identified as a bacteria belonging to the genus Aeromonas. The organism was Gram-negative, rod-shaped, non-sporing and catalase-positive (Table 1). Fwther partial sequence 1). Fwther partial sequence analysis of the gene encoding l6S rRNA confirmed the isolate as being Aeromonas sp. related closest to the Aeromonos sp. U351 reported by Skrodenyte Arbaciauskiene et al. (2006). According to these results, this bacteriwn was identified as a member of Aeromonas sp. Identification of the isolated microorganism was confirmed by the Persian Type Culture Collection (PICC), Tehran, Iran, as Aeromonos sp. and deposited as PICC 1691. The partial 16S rRNA sequence of the isolate was deposited in the GenBank database
rmder accession number DQ985606.