Skin lesions on different fish species caused by bacteria

Symptoms of many commonly reported diseases of fishes are similar, but these symptoms may occur by different factors. Different skin lesions on some fishes caused by Gram negative cytochrome oxidase positive bacteria were presented in this study. Pseudoalteromonas haloplanktis and Vibrio spp. from wild horse mackerel (Trachurus mediterraneus), Chryseobacterium indologenes from freshwater angelfish (Pterophyllum scalare) Pseudomonas putida from goldfish (Carassius auratus) and Aeromonas sobria from brook trout (Salvelinus fontinalis) were isolated. Also, bacteria were characterized both phenotypic and molecular methods. Wild and injured T. mediterraneus samples were captured with purse seine operation and gill net at the coast of Eastern Black Sea of Turkey and particularly, the phenomena was reported for the first time in the study.