Researchers at the University of Naples Federico II have developed a non-invasive, cost efficient method to detect and identify potential pathogens (viruses, bacteria, protozoa, metazoa, parasites) in aquatic facilities. The eDNA metabarcoding technology enables improved identification of pathogens in local and imported animals without having to sacrifice sentinel animals. This supports quarantine and bio-security measures and prevents potential pathogens spreading to healthy animals, leading to enhanced animal welfare.