Site Details: Langa Isle (East)

Punds Voe Shorebase
Trondra
ZE1 0XL
Operator: Scottish Sea Farms Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Langa Production cycle end date: Sep 2019
Total losses: 37.2 %

Langa Production cycle end date: Sep 2021
Total losses: 11.6 %

Langa Production cycle end date: Sep 2023
Total losses: 24.6 %

Source

Fish Health Inspectorate mortality

Date:
13/02/23-19/02/23
Mortality:
3,202
Mortality Rate:
1.1%
Reason given: Gill Health related
Gill Health related
CGD
FHI visit scheduled. FHI to monitor.
Date:
29/05/23-04/06/23
Mortality:
2,837
Mortality Rate:
1.1%
Reason given: Virus disease; Gill Health
Virus disease; Gill Health
CMS; CGD; Destocking through harvest
First notification since February 2023, de stocking is ongoing, FHI to monitor.
Date:
12/06/23-18/06/23
Mortality:
3,744
Mortality Rate:
1.5%
Reason given: Virus disease; Gill Health
Virus disease; Gill Health
CMS; FW wellboat treatment scheduled
Business contacted for further information. FHI to monitor. Figure updated 08/09/2025 (from 1.4% to 1.5% after FHI visit AFH-2025-0335)
Date:
19/06/23-25/06/23
Mortality:
8,446
Mortality Rate:
3.6%
Reason given: Virus disease; Gill Health
Virus disease; Gill Health
CMS; FW wellboat treatment scheduled
FHI to monitor outcome of FW treatment. Figure updated 08/09/2025 (from 2.9% to 3.6% after FHI visit AFH-2025-0335)
Date:
26/06/23-02/07/23
Mortality:
8,817
Mortality Rate:
5.2%
Reason given: Virus disease; Gill Health
Virus disease; Gill Health
CMS; Destocking through harvest; Business contacted: FW treatment all pens wk26, Site planned fallow August/September 2023.
Business contacted for additional information. FHI to monitor.
Date:
10/07/23-16/07/23
Mortality:
1,728
Mortality Rate:
1.3%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest; FW treatment conducted in wk26. Site plans to fallow August/September 2023.
Business correspondent contacted for further information. FHI to monitor.
Date:
17/07/23-23/07/23
Mortality:
2,537
Mortality Rate:
2.0%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest
Business correspondent contacted for further information. FHI to monitor.
Date:
24/07/23-30/07/23
Mortality:
2,047
Mortality Rate:
1.6%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest; business contacted - targeted harvests, possibly fallow by end of September
FHI to monitor.
Date:
31/07/23-06/08/23
Mortality:
2,503
Mortality Rate:
2%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest
FHI to monitor - Site due to fallow by end of September
Date:
07/08/23-13/08/23
Mortality:
2,154
Mortality Rate:
1.8%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest
FHI to monitor - Site due to fallow by end of September
Date:
14/08/23-20/08/23
Mortality:
3,256
Mortality Rate:
2.7%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest
5th consecutive report over threshold. Mortality has increased from previous week. Site due to fallow by end September. FHI to monitor.
Date:
21/08/23-27/08/23
Mortality:
2,428
Mortality Rate:
2.1%
Reason given: Virus Disease
Virus Disease
CMS; Destocking through harvest
Mortality ongoing since mid-July. Mortality numbers and rate are down on previous week. Site set to fallow by the end of September 2023. FHI to monitor
Date:
28/08/23-03/09/23
Mortality:
2,123
Mortality Rate:
1.9%
Reason given: Virus Disease
Virus Disease
CMS; Harvesting to fallow
Ongoing mortality around 2%. Down slightly on previous week . Due to fallow by end of the month. FHI to monitor.
Date:
04/09/23-10/09/23
Mortality:
3,801
Mortality Rate:
3.9%
Reason given: Virus Disease
Virus Disease
CMS; Harvesting to fallow. Due to fallow end September.
Business correspondent contacted. Site to be fallow by Wk 38. FHI to monitor. Figure updated 08/09/2025 (from 3.8% to 3.9% after FHI visit AFH-2025-0335)
Date:
11/09/23-17/09/23
Mortality:
4,010
Mortality Rate:
7.1%
Reason given: Virus Disease
Virus Disease
Site fallow in wk 38
High percentage due to low numbers on site, site nearly fallow.

Source

Inspection reports

Case Number: 2021-0225


Download Increased mortalities due to mechanical treatments were unreported. Further details in mortality events tab.
Remote inspection completed on 15/07/2021 by , observed by . Physical inspection carried out on the 21/07/2021 by
, observed by . VMD sampled by , observed by .
VMD fish appeared healthy when opened. [Original PDF]

Case Number: 2023-0077


Download The site has recently moved it's shore base to south whiteness from scalloway.
From the physical inspection of the stock, fish were observed shoaling well and responding positively to routine feeding regimes. No clinical signs of disease were observed onsite during the inspection. Fish sampled for VMD were healthy showed no signs of disease internally.
The site is due to fallow in September of this year, however given the successful growth rate the site has seen this production cycle this date may be brought forward. [Original PDF]

Case Number: 2025-0335


Download Cage 10 holds only wrasse at the moment - they were taken out of other pens before freshwater treating
Some HSMI present on site
Salmon Mortality: Has been below very low all cycle except leading up to and during treatments. Most recent mortality rise due to freshwater treatments to treat AGD and sealice. Last cycle had a number of weeks above 1%, especially at the end of the cycle (Wk37 2023 - 7.14%) due to CMS.
Wrasse mortality: Low throughout the cycle - mostly due to physical damage (net washers) or more recently some treatments.
Treatments: Peroxide - Nov 2024, Jan, 2025. Salmosan/Peroxide - April/May 2025. Freshwater/FLS - August 2025 (10-16th).
All cages treated for each treatment.
Health reports: Pharmaq Report dated 13/08/2025 - 9/10 fish positive PCR for AGD. 7/7 positive for Piscine reovirus (PRV),
7/7 negative for CMS.
Sea lice: When above levels, treatments have always brought the numbers back down below threshold levels.
During physical inspection of the site no moribunds or lethargic fish were observed. A couple of fish observed had slight physical damage, possibly from nets. Fish were shoaling deeper in the water column and of those observed, no lice were present. Site containment was good with pens and walkways tidy and top nets secure to the handrail.
A fish from pen 8 was taken for VMD sampling. This fish had no lice and looked healthy both externally and internally. [Original PDF]

Source