The impact of recreational sea fishing on fish stocks was first assessed in 2022 with a rolling multi-year data set (2017-2021). The report recognised the importance of collecting data on recreational fishing as it can identify changes or declines in fish populations before they are reflected in overall North Sea figures, thus acting as an early warning system.

Regardless of the location, inland fisheries should respect ecosystem quality by avoiding unnecessary, ineffective or harmful poisoning (overcrowding, ponds connected to other water bodies, etc.) and by avoiding the introduction of fish into the ecosystem. Where appropriate, the introduction of native fish should respect local genetic strains and population structure. Populations of species of no fisheries interest should be respected. The introduction of alien species should be avoided to prevent the introduction and spread of invasive alien species. Excessive baiting and consequent eutrophication should also be avoided, especially in lakes and reservoirs. Moreover, monitoring of these activities should be strengthened.

Planning and restoration of inland water systems should be encouraged: through biomanipulation*, fisheries can help restore clear water systems with macrophytes and high species richness instead of poor and banal turbid water systems characterised by algal blooms. In addition, maintenance and construction of fish-free ponds should be encouraged for specific biota, such as amphibians.