Centre for Fisheries Research The Centre for Fisheries Research (CVO) studies the development of fish and crustacean populations in the sea and the IJsselmeer, in order to advise the government on fisheries management. News Strong year classes for flatfish, cod in trouble June 30, 2020 Want to know more? ing. SW (Sieto) Verver Head of CVO Contact form Go to Data Collection Framework Projects WOT 5 - Fisheries Survey blogs Contact