when there are any reasons to suspect the presence of a disease listed in Part II of Annex IV, or the presence of such disease is confirmed in aquatic animals, the suspicion and/or the confirmation is immediately notified to the competent authority;

and

when increased mortality occurs in aquaculture animals, the mortality is immediately notified to the competent authority or a private veterinarian for further investigations.

the owner and any person attending aquatic animals;

any person accompanying aquaculture animals during transport;

veterinary practitioners and other professionals involved in aquatic animal health services;

official veterinarians, senior staff of veterinary or other official or private laboratories;

and

any other person with an occupational relationship to aquatic animals of susceptible species or to products of such animals.