Owing to the increasing importance of aquaculture to replace the progressive reduction of farmed fish due to the
increase of bacterial infections. The present study aimed to develop more environmental friendly biological compound to control
the bacterial infections. The antibacterial activity was performed with aqueous plant extract and the silver nanoparticles from
the leaves of Eichhornia crassipes. The characterization of the silver nanoparticles were done by using UV-Spectrophotometer,
FTIR and TEM. Fish infecting pathogens were isolated and taken from various parts of the infected C.batrachus. In this study,
the bacterial strains of A.hydrophila, P.aeruginosa, V.cholerae and E.tarda were used.
