Common bacterial pathogens found in aquaculture causes Vibriosis on fish (hemorrhagic septicemia; signs: fin rot, bleeding ulcer and internal organs). Vibrio at a concentration of 105 CFU/ ml in water causes fatality within 2 days, and 10-50% mortality in the affected population.  

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However, the current conventional lab-based method takes approximately 1-2 days from sample to results, and it is at a high cost + high labour intensity.