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Notifiable Diseases

Scotland's fish, molluscs and crustaceans are protected by legislation including the Aquatic Animal Health (Scotland) Regulations 2009. This requires the owner or any person attending aquatic animals, veterinarians or any person with an occupational relationship with the aquatic animals to report the symptoms of certain diseases to the Fish Health Inspectorate.

These diseases are notifiable in all species of fish.
  • Ostreid Herpesvirus (OsHV-1 µvar)
Infection with:

Disease Categories

Notifiable diseases are those listed in Part II, Annex IV of Council Directive 2006/88/EC, as amended, or Schedule 1 of the Aquatic Animal Health (Scotland) Regulations 2009. Directive 2006/88/EC classifies notifiable diseases into two categories. Each category has its own set of criteria. This regulates disease control and ensures the safe movement of aquatic animals and the placement of aquaculture products on the market. The diseases listed in Schedule 1 are currently covered by Additional Guarantees issued under Council Directive 91/67/EEC.

  • Exotic Diseases

These are exotic to the European Community and have the potential for significant economic consequences in aquaculture or have potential to cause detrimental environmental effects to wild species if they occur in the European community.

  • Non-exotic Diseases

These are present in some parts of the European Community and have either, the potential for significant economic consequences in aquaculture or the potential to cause detrimental environmental effects to wild species if they occur in regions where they aren't currently found.

  • Other Notifiable Diseases

These are diseases that are present in parts of the European Community and are currently controlled by Community legislation (Decision 2010/221/EU as amended). They may also result in economic or environmental damage.



  • Epizootic haematopoietic necrosis (EHN)


Infection with:

  • Bonamia exitiosa
  • Perkinsus marinus
  • Microcytosis mackini


  • Taura syndrome
  • Yellowhead disease




  • Oyster Herpesvirus (OsHV-1 µvar)

Emerging Diseases

There is also a possibility that emerging diseases of fish, molluscs or crustaceans may be controlled where they are deemed to have the potential to cause significant economic or environmental damage to farmed or wild species.

Special Controls

Restrictions on movements of aquatic animals suspected or confirmed as being infected with a notifiable disease are controlled under notices (Initial Designation Notice or Confirmed Designation Notice) made under The Aquatic Animal Health (Scotland) Regulations 2009 or by order made under the Sea Fisheries (Shellfish) Act 1967.