Lead Partner: Marine Institute, Rinville, Oranmore, Co. Galway. Project Partners: Vet-Aqua International, Oranmore, Co. Galway. Coastal & Marine Research Centre (CMRC), University College Cork. Veterinary Sciences Division, Agri-Food & Biosciences Institute (AFBI), Belfast. The aims of the GILPAT project were to take a multidisciplinary approach in order to further understand the underlying causes of gill disease in Irish farmed fish. A specific aim was to establish a pilot zooplankton monitoring programme and use training workshops to enable fish farmers to upskill in areas such as zooplankton sampling and basic identification of the main zooplankton/jellyfish species common to Irish waters. Complimenting this was the development of a number of molecular diagnostic methods for the detection of potential pathogens suspected of being involved in the development of the condition. Together with a comprehensive literature review, epidemiological study, and experimental challenge studies, the project aimed to bring all these elements together with the objective of outlining potential mitigation measures and identifying areas for future research. This project (Grant-Aid Agreement No. PBA/AF/08/002(01)) was carried out under the Sea Change strategy with the support of the Marine Institute and the Marine Research Sub-Programme of the National Development Plan 2007–2013, co-financed under the European Regional Development Fund. Funder: Marine Institute