Antibiogram of Aeromonas Hydrophila isolated from diseased Blood red parrot cichlid fish (Amphilophus Citrinellus X Heros Severus) of aquarium shop

In the current study, an antibiogram of Aeromonas hydrophila isolated from diseased Blood Red Parrot Cichlid fish of aquarium shop was carried out. Ornamental fish have been kept as a pet because of their attractiveness based on their body color, body shape, sizes, behaviors, and the way they are swimming such as Blood Red Parrot Cichlid fish with their unique characteristic. Blood Red Parrot Cichlid fish is one of the famous hybrid ornamental fish. They were valued for their calm personality and ability to live in a community tank with the same fish species or other peaceful fish communities. Ornamental fish market demand has been increased lately in Malaysia. However, A. hydrophila has been a threat to ornamental fish since it will cause bacterial disease on fish and lead to mortality. The bacteria had been infected the fish organs and ulcers of the skin. Although there are a few research about the isolation of Aeromonas hydrophila from infected ornamental fish, there is insufficient information on the most suitable antibiotic that applies to treat A. hydrophila infection on ornamental fish. The method that will be used in this study is the antibiotic sensitivity test. The present bacteria was subjected to this test by using the disk diffusion method with a total of!16 types of antibiotics was used in this study. The 16 types of antibiotics are amoxycillin 25μg, amplicillin 10μg, chloramphenicol 30μg, compound sulphonamides 300μg, doxycycline 30μg, erythromycin 15μg, flumequine 30μg, fosfomycin 50μg, kanamycin 30μg, nalidixic acid 30μg, novobiocin 30μg, oxolinic acid 2μg, oxytetracycline 30μg, sulphamethoxazole 25μg, spiramycin 100μg, and tetracycline 30μg. Based on the antibiotic sensitivity results, the most suitable antibiotic that can be applied on A. hydrophila disease-infected ornamental fish is erythromycin (E) and flumequine (UB) as both of these antibiotics showed the highest sensitivity in this study. In the interval, it could decide that these antibiotics should replace the existing antibiotic for the A. hydrophila disease treatment.