Isolation and characterization of bacteria associated with ulcerative disease of the fish, Clarias gariepinus

Bacteriological examination of Clarias gariepinus, suffering from ulcerative disease, was carried out. As a whole, 18 species of bacteria viz.,Aeromonas caviae, A hydrophila, A. salmonicida, A. sobria, Bacillus sp., Escherichia coli, Edwardsiella tarda, Plesiomonas shigelloides, Pseudomonas aeruginosa, Pseudomonas sp., Salmonella sp.,Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus sp. and unidentified bacteria were isolated from the fishes having ulcerative disease.