Interim Report of the Working Group on Data Poor Diadromous Fish (WGDAM)

The Working Group on Data Poor Diadromous Fish (WGDAM), a subgroup of the Work-ing Group on the Science Requirements to Support Conservation, Restoration and Man-agement of Diadromous Species (WGRECORDS), started working in autumn 2015. Diadromous fish are species that have separate feeding and reproduction areas in saline and fresh water and migrate between them. The main task of WGDAM is to update the status and distribution knowledge of poorly understood diadromous fish species for ICES. The name of the WGDAM group was updated to The Working Group on Data Limited Diadromous Fish in meeting that was held at ICES ASC 2017.In 2005 the ICES Diadromous Fish Committee published a report on diadromous fish species (ICES CM 2005/I:02 Ref. ACFM, ACE, G) to report on the status and distribution of recognized poorly understood species. Since the 2005 report, there have been increas-ing legal drivers to protect and restore these species mainly for biodiversity reasons. These legal drivers and associated science have further highlighted knowledge gaps in the biology of these species. Pressure from development in freshwater, transitional and marine zones continues to threaten the life cycle of these species. More scientific infor-mation is required for these data poor diadromous species.