Matløyso

Site 21915 · Fitjar municipality · Production area 3, Karmøy til Sotra

Below the lice limit, week 39Operated by Sjøtroll Havbruk Sjø AS · group Lerøy Seafood Group

0.25Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

10Lice treatments in 2026Latest: Thermal delousing, week 38, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

11Wellboat visits in 2026by 2 different vessels · latest 12 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

0Escapes reportedNone reportedSince 2006 · Directorate of Fisheries · updated 01 Oct 2026

Sea lice against the limit

Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 16–21 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.26	0.5	Below the limit
2	0.11	0.5	Below the limit
3	0.11	0.5	Below the limit
4	0.13	0.5	Below the limit
5	0.14	0.5	Below the limit
6	0.15	0.5	Below the limit
7	0.18	0.5	Below the limit
8	0.21	0.5	Below the limit
9	0.25	0.5	Below the limit
10	0.31	0.5	Below the limit
11	0.40	0.5	Near the limit
12	0.05	0.5	Below the limit
13	0.04	0.5	Below the limit
14	0.04	0.5	Below the limit
15	0.03	0.5	Below the limit
16	0.06	0.2	Below the limit
17	0.05	0.2	Below the limit
18	0.04	0.2	Below the limit
19	0.09	0.2	Below the limit
20	0.13	0.2	Below the limit
21	0.18	0.2	Near the limit
22	0.15	0.5	Below the limit
23	0.26	0.5	Below the limit
24	0.28	0.5	Below the limit
25	0.27	0.5	Below the limit
26	0.24	0.5	Below the limit
27	0.25	0.5	Below the limit
28	0.31	0.5	Below the limit
29	0.22	0.5	Below the limit
30	0.37	0.5	Below the limit
31	0.41	0.5	Near the limit
32	0.43	0.5	Near the limit
33	0.48	0.5	Near the limit
34	0.26	0.5	Below the limit
35	0.05	0.5	Below the limit
36	0.28	0.5	Below the limit
37	0.70	0.5	Above the limit
38	0.06	0.5	Below the limit
39	0.25	0.5	Below the limit

Earlier years

20251 of 24 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	unknown	0.5	Not reported
2	unknown	0.5	Not reported
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
15	unknown	0.5	Not reported
16	unknown	0.2	Not reported
17	unknown	0.2	Not reported
18	unknown	0.2	Not reported
19	unknown	0.2	Not reported
20	unknown	0.2	Not reported
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	unknown	0.5	Not reported
25	unknown	0.5	Not reported
26	unknown	0.5	Not reported
27	unknown	0.5	Not reported
28	unknown	0.5	Not reported
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.02	0.5	Below the limit
34	0.02	0.5	Below the limit
35	0.03	0.5	Below the limit
36	0.07	0.5	Below the limit
37	0.09	0.5	Below the limit
38	0.15	0.5	Below the limit
39	0.23	0.5	Below the limit
40	0.32	0.5	Below the limit
41	0.33	0.5	Below the limit
42	0.38	0.5	Below the limit
43	0.41	0.5	Near the limit
44	0.51	0.5	Above the limit
45	0.02	0.5	Below the limit
46	0.05	0.5	Below the limit
47	0.05	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.12	0.5	Below the limit
50	0.20	0.5	Below the limit
51	0.38	0.5	Below the limit
52	0.47	0.5	Near the limit

20243 of 46 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.11	0.5	Below the limit
2	0.15	0.5	Below the limit
3	0.18	0.5	Below the limit
4	0.19	0.5	Below the limit
5	0.22	0.5	Below the limit
6	0.25	0.5	Below the limit
7	0.23	0.5	Below the limit
8	0.25	0.5	Below the limit
9	0.29	0.5	Below the limit
10	0.31	0.5	Below the limit
11	0.36	0.5	Below the limit
12	0.33	0.5	Below the limit
13	0.13	0.5	Below the limit
14	0.10	0.5	Below the limit
15	0.12	0.5	Below the limit
16	0.16	0.2	Below the limit
17	0.13	0.2	Below the limit
18	0.14	0.2	Below the limit
19	0.06	0.2	Below the limit
20	0.08	0.2	Below the limit
21	0.10	0.2	Below the limit
22	0.20	0.5	Below the limit
23	0.27	0.5	Below the limit
24	0.30	0.5	Below the limit
25	0.20	0.5	Below the limit
26	0.22	0.5	Below the limit
27	0.20	0.5	Below the limit
28	0.24	0.5	Below the limit
29	0.26	0.5	Below the limit
30	unknown	0.5	Not reported
31	0.34	0.5	Below the limit
32	0.36	0.5	Below the limit
33	0.63	0.5	Above the limit
34	0.66	0.5	Above the limit
35	0.39	0.5	Below the limit
36	0.29	0.5	Below the limit
37	0.06	0.5	Below the limit
38	0.36	0.5	Below the limit
39	0.99	0.5	Above the limit
40	0.13	0.5	Below the limit
41	0.13	0.5	Below the limit
42	0.13	0.5	Below the limit
43	0.18	0.5	Below the limit
44	0.01	0.5	Below the limit
45	0.02	0.5	Below the limit
46	0.03	0.5	Below the limit
47	0.09	0.5	Below the limit
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

20230 of 11 weeks with a count above the limit (data from week 40)

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.02	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.01	0.5	Below the limit
47	0.02	0.5	Below the limit
48	0.04	0.5	Below the limit
49	0.05	0.5	Below the limit
50	0.06	0.5	Below the limit
51	0.06	0.5	Below the limit
52	0.11	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 38, 2026
Thermal delousing4 pens
Week 37, 2026
Thermal delousing1 pen
Week 35, 2026
Thermal delousing4 pens
Week 33, 2026
Thermal delousing2 pens

Show all 19

Week 30, 2026
Thermal delousing1 pen
Week 26, 2026
Thermal delousing1 pen
Week 25, 2026
Thermal delousing4 pens
Week 22, 2026
Thermal delousing4 pens
Week 11, 2026
Thermal delousingWhole site
Week 1, 2026
Thermal delousing, Freshwater treatment6 pens
Week 45, 2025
Thermal delousingWhole site
Week 44, 2024
Other treatment2 pens · Kombi - FV og Thermisk
Week 40, 2024
Freshwater treatment, Thermal delousingWhole site
Week 36, 2024
Thermal delousing3 pens
Week 34, 2024
Thermal delousing, Freshwater treatment8 pens
Week 31, 2024
Thermal delousing, Freshwater treatment4 pens
Week 25, 2024
Thermal delousing, Freshwater treatment2 pens
Week 19, 2024
Thermal delousing, Freshwater treatment2 pens
Week 13, 2024
Thermal delousing, Freshwater treatment6 pens

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

11 visits in 2026

Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.

Arrival	Vessel	Previous farm (14 days)	Duration
12 Sep 2026	Seigrunn	Storevikholmen	12 h 45 min
27 Aug 2026	Seigrunn	Storevikholmen	24 h 55 min
11 Aug 2026	Seigrunn	Grimsholmen	29 h 54 min
22 Jul 2026	Seigrunn	Storevikholmen	25 h 48 min
21 Jul 2026	Seigrunn	Storevikholmen	7 h 34 min
28 May 2026	Seihav	Djupevika	8 h 52 min
25 May 2026	Seihav	Djupevika	63 h 56 min
17 Mar 2026	Seigrunn	Sagen 2	8 h 24 min
16 Mar 2026	Seigrunn	Sagen 2	18 h 1 min
15 Mar 2026	Seigrunn	Sagen 2	15 h 42 min
30 Dec 2025	Seihav	Bognøy	30 h 15 min
25 Nov 2025	Mowi Star	Bjørnholmen	1 h 2 min

Show 20 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
10 Nov 2025	Mowi Star	Sauaneset I	1 h 16 min
20 Oct 2025	Navoey	Haugsnesvåg	14 h 55 min
16 Oct 2025	Navoey	Haugsnesvåg	11 h 17 min
15 Oct 2025	Navoey	Haugsnesvåg	49 min
15 Oct 2025	Navoey	Haugsnesvåg	7 h 37 min
14 Oct 2025	Navoey	Haugsnesvåg	51 min
14 Oct 2025	Navoey	Haugsnesvåg	12 h 16 min
06 Aug 2025	Mowi Star	no other farm	1 h 22 min
04 Aug 2025	Mowi Star	Ramsøy S	1 h 1 min
14 Jul 2025	Mowi Star	Kjeringeholmen	1 h 8 min
03 Oct 2024	Seihav	Hestabyneset	21 h 33 min
24 Aug 2024	Seihav	Ålforo	9 h 25 min
04 Aug 2024	Seihav	Sagen 2	17 h 56 min
03 Aug 2024	Seihav	Sagen 2	13 h 24 min
18 Jun 2024	Seihav	Sagen 2	15 h 44 min
09 May 2024	Seihav	Djupevika	12 h 54 min
31 Mar 2024	Seihav	Sagen 2	10 h 46 min
30 Mar 2024	Seihav	Sagen 2	13 h 59 min
29 Mar 2024	Seihav	Sagen 2	20 h 33 min
18 Jan 2024	Navoey	Seglberget	1 h 55 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Licences

Site MAB: 2,780 tonnes

Licence	Type	Capacity	Holder
H B 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H FJ 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H FJ 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H FJ 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026