After the 2004 enlargement, the European Union continued this management strategy and introduced a differentiation between the two stocks, based on scientific advice.
Tar éis mhéadú 2004, leanann an tAontas Eorpach ar aghaidh leis an mbainistiú seo agus tugtar isteach, ar mholadh eolaíoch, a roinnt suas in dhá stoc.