“…They are normally found and typically prevalent in fish environments and in some particular unfavorable environmental conditions which were thought to be the main risk factors for disease induction and significant economic losses (Shawna & Brian, 2020), as disease outbreaks were caused due to a complex interactions between fish, pathogens and the aquatic environment (Escobar et al, 2018). These pathogens had a major impact on fish production (Dissasa et al, 2022). Gram-negative bacteria such as Aeromonas species, Pathogenic bacteria, Aeromonas hydrophila, Vibrio alginolyyticus, PCR Sixty freshly captured wild Trachurus indicus fish were randomly selected during the summer season of 2022 from the Suez Canal and examined clinically and bacteriologically to detect the most prevailing bacterial diseases affecting it.…”