The Biosecurity Guidelines for Fish Farms were developed within the Interreg Latvia–Lithuania project as a practical document to support fish farms in preventing and controlling fish disease risks in everyday operations. The guidelines were prepared through cooperation between researchers, veterinarians, and fish-farming specialists, combining scientific knowledge with practical experience from both flow-through and recirculating aquaculture systems.

The document has a clear and practical structure. It covers the main areas of biosecurity in fish farms, including broodstock and egg management, water and equipment hygiene, fish health monitoring, staff practices, and emergency response. Each section is linked to a Biosecurity Risk Identification Checklist, which helps farms identify potential risk points through simple yes/no questions and supports the development or improvement of farm-specific biosecurity plans.

The guidelines are designed for practical use. The checklist and Action Plan help translate biosecurity principles into clear daily actions, making the document easy to apply under real farming conditions. The aim is to support fish health, reduce disease risks, and strengthen consistent and responsible biosecurity practices in fish farms in Latvia, Lithuania, and other countries.

Publication is produced by the Institute of Food Safety, Animal Health and Environment “BIOR” within the INTERREG project SPPwelfare (LL-00133) “Latvian and Lithuanian conjunction – Improvement of Baltic salmon and pikeperch rearing methods for more sustainable, resilient and healthy fish populations”. The project is implemented within the Interreg VI-A Latvia Lithuania Programme 2021–2027. More information about the programme on the www.latlit.eu and the official website of the European Union www.europa.eu. This project is co-financed by the European Union. Total project budget is 497 146.00 EUR, funding of European Regional Development Fund is 397 716.80 EUR.