Data Dashboard

All the latest data and charts from Fish Health Inspectorate and Salmon Scotland in one handy place.

Salmon Scotland - Average mortality rate

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Salmon Scotland - Most deadly sites in 2025*

  1. Bay of Holland 40.6% (Jan 25)
  2. Loch a Chairn Bhain 30.4% (Jan 25)
  3. Djubawick 29.4% (Jan 25)
  4. Kingairloch 24.6% (Jan 25)
  5. Strondoir Bay 24.6% (Apr 25)
  6. Strone 24.2% (Feb 25)
  7. Maol Ban 23.6% (Apr 25)
  8. Hogan 23.3% (Apr 25)
  9. Linnhe 18.3% (Mar 25)
  10. Puldrite 15.5% (Apr 25)

* Highest Cumulative mortality over production cycle.
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Salmon Scotland - Production cycle mortality*

Highest figures for April '25
  1. Strondoir Bay 24.6%
  2. Maol Ban 23.6%
  3. Hogan 23.3%
  4. Puldrite 15.5%
  5. Sconser Quarry 12.3%
  6. Burrastow 11.7%
  7. Leven 11%
  8. Cloudin 10.8%
  9. Loch Carnan 6.5%

* Highest Cumulative mortality over production cycle from sites reporting in April '25.
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Salmon Scotland - Monthly mortality

Highest figures for April '25
  1. South of Linga 6.2%
  2. Outer Bay 5%
  3. Shuna 4.6%
  4. Meall Mhor 4.3%
  5. East of Papa Little 4.2%
  6. Quarry Point 4.1%
  7. Lochmaddy 3.8%
  8. Dunstaffnage 3.8%
  9. Fiunary 3.7%
  10. Greshornish 3.6%

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FHI Cumulative Mortality

Freshwater & seawater Source

FHI Cumulative Seawater Mortality

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FHI Cumulative Freshwater Mortality

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FHI Seawater Mortality

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FHI - Worst weekly mortality events 2025 (seawater)

  1. Hellisay 31,642 deaths (07/04/25) ▼ Reason given: Losses post smolt transfer
  2. Invertote Salmon Farm 21,347 deaths (10/02/25) ▼ Reason given: Freshwater Treatments AGD/ Thinning Populations/Harvesting/Handling/Seals (Pen 7)
  3. Ardintoul 19,342 deaths (03/03/25) ▼ Reason given: Physical damage due to smolt transfer and precocoius males
  4. Hellisay 18,337 deaths (14/04/25) ▼ Reason given: Losses post smolt transfer
  5. Kingairloch 17,264 deaths (03/03/25) ▼ Reason given: Physical damage due to smolt transfer
  6. Invertote Salmon Farm 13,753 deaths (03/02/25) ▼ Reason given: AGD/Harvest handling/Seal (Pens 7 in pen),8 & 9
  7. Linga (Setterness) 13,596 deaths (31/03/25) ▼ Reason given: Transfer related
  8. Culnacnoc Salmon Farm 13,152 deaths (03/02/25) ▼ Reason given: Freshwater Treatments/Handling /AGD
  9. Camas Glas 12,874 deaths (20/01/25) ▼ Reason given: Treatment Loss (Bath treatment)
  10. Culnacnoc Salmon Farm 12,099 deaths (13/01/25) ▼ Reason given: 2 weeks mortality due to weather storming off farms to cover wash out & revised bin weights to numbers.

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FHI - Worst weekly mortality events 2025

  1. Couldoran Incubation Unit 134,446 deaths (14/04/25) ▼ Reason given: Water Quality
  2. Couldoran Hatchery 108,886 deaths (10/03/25) ▼ Reason given: Disease (Costia)
  3. Couldoran Incubation Unit 56,695 deaths (21/04/25) ▼ Reason given: Water Quality
  4. Couldoran Incubation Unit 52,172 deaths (07/04/25) ▼ Reason given: Water Quality
  5. Couldoran Incubation Unit 51,834 deaths (28/04/25) ▼ Reason given: Water Quality
  6. Applecross Smolt Unit 45,599 deaths (28/04/25) ▼ Reason given: Fungus
  7. Applecross Smolt Unit 2 32,043 deaths (10/02/25) ▼ Reason given: Handling
  8. Hellisay 31,642 deaths (07/04/25) ▼ Reason given: Losses post smolt transfer
  9. Invertote Salmon Farm 21,347 deaths (10/02/25) ▼ Reason given: Freshwater Treatments AGD/ Thinning Populations/Harvesting/Handling/Seals (Pen 7)
  10. Applecross Smolt Ongrowing 1 20,146 deaths (07/04/25) ▼ Reason given: Water Quality

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Number of aquaculture sites above CoGP lice threshold

Code of Good Practice suggests between February and Jun the threshold is lowered from an average of 1 to 0.5 adult female L. salmonis per fish during this period.

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