Socio-ecological implications of black spot disease in European perch: linking parasite dynamics and angler behaviour in a large shallow lake

This dataset contains photographic data used to study parasitism in European perch (Perca fluviatilis) from Lake Balaton. We analyzed photographs to determine the location of parasites on the perch’s body, investigating both the prevalence and also the spatial distribution of Apophallus donicus in Lake Balaton. Additionally, we created a Hungarian questionnaire targeting the national perch-angling community (through social-media groups and fishing associations), though anyone with the link could participate. (2026-03-25)