The Monitoring and Restoration of Aquatic Fauna team conducts policy-related scientific research on the monitoring and restoration of aquatic fauna, especially fish. Within the framework of various national and international directives (the Species Decree, the Water Framework Directive, the Habitats Directive, Natura 2000, the European Eel Regulation and the Invasive Alien Species Regulation), we sample the streams, tidal and non-tidal rivers, canals and lakes at regular intervals to map the state of aquatic wildlife. The team also manages the Fish Nursery, where breeding programmes are run for species restoration and support purposes. Populations of endangered aquatic species can be boosted by reintroductions from specially developed breeding programmes.