Since 2012, more than 200 experts from various fields of water management and nature conservation, the federal states and the federal government, the federal waterway administration, the energy industry, hydraulic engineering, fisheries biology, nature conservation, fishing and fishing associations and university science have been involved in the German Participatory Forum on Fish Protection and Downstream Migration. In the second cycle of the Forum, from 2015 to 2018, the productive dialogue was continued and a better understanding or various aspects  of fish protection and downstream fish migration was compiled. This report documents the project work of the 2nd cycle and is available for download.