Bacterial disturbances implicated in naturally and experimentally infected fresh water fishes

ABSTRACT

Motile aeromonad organisms have been isolated in high incidence among examined fish species. A. hydrophila was recovered in an incidence of 6.4%, 4.8% and 6.4% from tilapia nilotica, clarias lazera and mugil species respectively. Other aeromonads were A. punctata, A. salmonicida and A. anaerogenes in an incidence extended between 0.00% up to 4.0%. A. salmonicida was the first to be recovered from fresh water fish. Ps. fluorescens, Citr. diversus, Citr. Freundii, capital later U enterocolitica, S. marcescens and Enterbacter species were the most bacterial pathogens isolated from different kinds of fish. Experimental studies on the pathogenicity of A. hydrophila, Ps. fluorescens and A. punctata in clarias species were discussed in details