Vol. 12, Issue 2 (2023)

Aquaculture is in a phase of rapid development and growth and itensification of fish farming often leads to the emergence of infectious disease. The present study was conducted to survey the farms for the occurrence of bacterial disease from October 2012 to March 2013 in eight fish farms of Dineshpur, Kalinagar and Pantnagar of Tarai region, Udham Singh Nagar, Uttarakhand. A total of 27 number of fishes were infected with disease. The occurrence of disease was highest in the month of November followed by October and was nil in the month of February and March. The bacteria were isolated from the lesions in fins, tail erosion and skin haemorrhages and were identified as Aeromonas and Pseudomonas based on biochemical characterization tests. The disease identified were Fin rot, Tail rot and Aeromonasis. The isolates exhibited sensitivity to antibiotics Offloxacin, Tetracyclin, Amoxycillin, Sulphadiazine, Neomycin and Streptomycin and therefore can be used for control and treatment of bacterial disease, on the other hand it was observed that isolates were completely resistant to Amphotericin and Fluconazole.