The danger of zoonotic diseases is increasing day by day for human. A lot of bacteria lives high concentrate in the water environment. Also the bacterial flora of the aquatic organisms is determined by the environment in which it lives. According to, this the objective of the study was to evaluate, examine, research and monitoring the condition of the pathogenic bacteria for human and fish in the fish farms of Kastamonu, Turkey. Aeromonashydrophila, Lactococcusgarviae, Vibrio anguillarum and were isolated from fish samples, also Burkholderiacepacia, Pseudomonas aeruginosa and Pseudomonas fluorescens were isolated from water samples. Aeromonashydrophila, Burkholderiacepacia, Pseudomonas aeruginosa and Vibrio fluvialis are zoonotic bacteria, and Lactococcusgarviae is a circuitously dangerous for human health. According to this study results, fish producers must pay attention to hygiene rules and monitoring the aquaculture environment.