Aeromonas species are the most common source of bacterial infection in fish. High density of fish in aquaculture often leads to fast disease spread, massive fish death, and water contamination. Early detection of bacterial pathogens could provide better disease control. Surfix Diagnostics has developed a photonic biosensor platform which can directly measure double stranded DNA (dsDNA) without requiring cell culture or DNA amplification. In PHOTO-SENS*, a demonstrator photonic biosensor system for salmon pathogen detection is being developed. The present study describes the detection of bacterial dsDNA using either PCR fragments or whole genomic DNA on Surfix’s photonic biosensor platform. * This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 965643. See www.photo-sens.eu for more information.

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