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Publication - Factsheet

Health status of fish and shellfish diseases in Scotland

Last updated
10 September 2024 - see all updates
Directorate
Marine Directorate
Topic
Marine and fisheries

Details of the listed diseases and their current status in Scotland.

Overview

Great Britain has a high health status with regard to fish, mollusc and crustacean diseases. The listed diseases are detailed in Annex 1A of retained Commission Regulation (EC) No 1251/2008 and Schedule 1 of the Aquatic Animal Health (Scotland) Regulations 2009.

Movements of fish, molluscs and crustaceans (including their ova or gametes) of species susceptible to or a vector for any of the listed diseases are only permitted between areas with equivalent health status or from a higher to a lower health status. Movements of susceptible or vector species are prohibited from an area with a low health status to an area with a high health status.

The lists of susceptible and vector species for the diseases listed in Annex 1A are published on the Gov.UK website. The list of susceptible species for the diseases listed in Schedule 1 are published in Table 1 below.

Table 1: List of diseases in Schedule 1 of the Aquatic Animal Health (Scotland) Regulations 2009 including the species susceptible to those diseases and the geographic areas of Scotland declared free of those diseases

Disease

Susceptible species

Geographic area declared disease free
Bacterial kidney disease

Fish belonging to the family Salmonidae

Hybrids of any susceptible species listed above will also be considered as susceptible.		  

Infection with Gyrodactylus salaris

Oncorhynchus mykiss (rainbow trout), Salvelinus alpinus (Arctic char), Salvelinus fontinalis (brook trout), Salvelinus namaycush (lake trout), Salmo salar (Atlantic salmon), Salmo trutta (brown trout), Thymallus thymallus (grayling)

Other species of fish shall also be considered as susceptible species when in contact with species listed as susceptible through co-habitation or through water supply.

Hybrids of any susceptible species listed above will also be considered as susceptible.

The whole territory of Scotland

Spring viraemia of carp

Abramis brama (bream), Aristichthys nobilis (bighead carp), Carassius auratus (goldfish), Carassius carassius (crucian carp), Ctenopharyngodon idellus (grass carp), Cyprinus carpio (common carp and koi carp), Danio rerio (zebrafish), Hypophthalmichthys molitrix (silver carp), Notemigonus crysoleucas (golden shiner), Percocypris pingi (Jinsha bass carp), Pimephales promelas (fathead minnow), Rutilus kutum (Caspian white fish), Rutilus rutilus (roach), Silurus glanis (wels catfish), Tinca tinca (tench)

Hybrids of any susceptible species listed above will also be considered as susceptible

The whole territory of Scotland

Ostreid herpesvirus 1 μvar

(OsHV-1 μvar)

Pacific oyster (Magallana gigas)

The whole territory of Scotland

Listed diseases: current status

Health status of Scotland in relation to fish, mollusc and crustacean diseases listed in Annex 1A to Commission Regulation (EC) No 1251/2008, as it applies in Scotland, and Schedule 1 of The Aquatic Animal Health (Scotland) Regulations 2009

Fish

Disease

Status of Scotland
Bacterial kidney disease (BKD)

Not recognised as free (undetermined) except specified locations.

National controls for clinical disease

Epizootic haematopoietic necrosis (EHN)

Declared free

Infection with Gyrodactylus salaris

Declared free

Infectious haematopoietic necrosis (IHN)

Declared free

Infectious salmon anaemia (ISA) (infection with HPR-deleted ISAV)

Declared free

Koi herpes virus (KHV)

Not recognised as free (undetermined) except specified locations

Spring viraemia of carp (SVC)

Declared free
Viral haemorrhagic septicaemia (VHS) Declared free

Crustaceans

Disease

Status in Scotland

Taura syndrome

Declared free
White spot disease Not recognised as free (undetermined) except specified locations

Yellowhead disease

Declared free

Molluscs

Disease

Status in Scotland

Infection with Bonamia exitiosa

Declared free
Infection with Bonamia ostreae Declared free except specified zones
Infection with Marteilia refringens Declared free

Infection with Microcytos mackini

Declared free

Ostreid herpesvirus 1 µvar

(OsHV-1 µvar)

Declared free except specified locations
Infection with Perkinsus marinus Declared free

We have published zones and locations in Scotland with a health status different to that in the tables above and which are subject to movement restrictions.

We have also published maps of these areas.

First published
25 August 2020
Last updated
10 September 2024 - show all updates

  1. Updated disease information.

  2. gov.uk website link updated.

  3. Updated text and link.

  4. Updated text and link.

  5. Updated the Listed diseases: current status

  6. Updated the Listed diseases: current status

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