7-9 February 2017 – The working group on lumpfish (WGlump) was hosted by Caroline Durif, in Bekkjarvik, Austevoll, Norway. Participants were Rasmus Hedeholm (Greenland Institute of Natural Ressources, Greenland), James Kennedy (Marine Research Institute, Iceland), Halldor Olafsson (BioPol, Iceland), and Johanne Gauthier (DFO, Canada). The group discussed recent updates on lumpfish (Cyclopterus lumpus) research and compared the different methods of assessments of lumpfish wild populations across its distribution area which extends from Canada to the Baltic and the North Sea. Lumpfish has traditionally been exploited for its roe, but in recent years juveniles have also been used as delousing agents in Norwegian salmon aquaculture.