Einar Ringø is professor emeritus at UiT, The Arctic University of Norway, Norwegian College of Fishery Science. He has 281 publications, with 20,963 citations (ResearchGate, 13 December). His current research projects are on [1] the effect of dietary manipulations on bacteria colonization in the gastrointestinal tract of fish; [2] the effect of dietary manipulation on fish health and disease resistance; [3] interactions between lactic acid bacteria and pathogenic bacteria determined using in vivo and ex vivo methods; and [4] gut microbiota and the mucosal immune system.