Syrtangen

Site 10309 · Øygarden municipality · Production area 4, Nordhordland til Stadt

Below the lice limit, week 39Operated by Blom Fiskeoppdrett AS · group unknown

0.12Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

5Lice 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

8Wellboat visits in 2026by 2 different vessels · latest 16 Aug 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	0.04	0.5	Below the limit
2	0.12	0.5	Below the limit
3	0.16	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.21	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.02	0.5	Below the limit
8	0.00	0.5	Below the limit
9	0.04	0.5	Below the limit
10	0.04	0.5	Below the limit
11	0.02	0.5	Below the limit
12	0.02	0.5	Below the limit
13	0.06	0.5	Below the limit
14	0.14	0.5	Below the limit
15	0.12	0.5	Below the limit
16	0.18	0.2	Near the limit
17	0.17	0.2	Near the limit
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.01	0.2	Below the limit
22	0.02	0.5	Below the limit
23	0.06	0.5	Below the limit
24	0.02	0.5	Below the limit
25	0.10	0.5	Below the limit
26	0.39	0.5	Below the limit
27	0.04	0.5	Below the limit
28	0.16	0.5	Below the limit
29	0.08	0.5	Below the limit
30	0.12	0.5	Below the limit
31	0.24	0.5	Below the limit
32	0.43	0.5	Near the limit
33	0.47	0.5	Near the limit
34	0.07	0.5	Below the limit
35	0.17	0.5	Below the limit
36	0.45	0.5	Near the limit
37	0.38	0.5	Below the limit
38	0.49	0.5	Near the limit
39	0.12	0.5	Below the limit

Earlier years

20250 of 17 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	unknown	0.5	Not reported
30	unknown	0.5	Not reported
31	unknown	0.5	Not reported
32	unknown	0.5	Not reported
33	unknown	0.5	Not reported
34	unknown	0.5	Not reported
35	unknown	0.5	Not reported
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.30	0.5	Below the limit
40	0.07	0.5	Below the limit
41	0.13	0.5	Below the limit
42	0.10	0.5	Below the limit
43	0.09	0.5	Below the limit
44	0.10	0.5	Below the limit
45	0.20	0.5	Below the limit
46	0.02	0.5	Below the limit
47	0.04	0.5	Below the limit
48	0.08	0.5	Below the limit
49	0.20	0.5	Below the limit
50	0.30	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.04	0.5	Below the limit

20240 of 49 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	0.17	0.5	Below the limit
2	0.42	0.5	Near the limit
3	0.07	0.5	Below the limit
4	0.11	0.5	Below the limit
5	0.07	0.5	Below the limit
6	0.10	0.5	Below the limit
7	0.10	0.5	Below the limit
8	0.12	0.5	Below the limit
9	0.23	0.5	Below the limit
10	0.00	0.5	Below the limit
11	0.00	0.5	Below the limit
12	0.03	0.5	Below the limit
13	0.02	0.5	Below the limit
14	0.03	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.04	0.2	Below the limit
18	0.04	0.2	Below the limit
19	0.02	0.2	Below the limit
20	0.11	0.2	Below the limit
21	0.07	0.2	Below the limit
22	0.03	0.5	Below the limit
23	0.07	0.5	Below the limit
24	0.19	0.5	Below the limit
25	0.08	0.5	Below the limit
26	0.18	0.5	Below the limit
27	unknown	0.5	Reported without a count
28	0.20	0.5	Below the limit
29	0.08	0.5	Below the limit
30	0.48	0.5	Near the limit
31	0.43	0.5	Near the limit
32	0.47	0.5	Near the limit
33	0.07	0.5	Below the limit
34	0.17	0.5	Below the limit
35	0.43	0.5	Near the limit
36	0.45	0.5	Near the limit
37	0.44	0.5	Near the limit
38	0.39	0.5	Below the limit
39	0.48	0.5	Near the limit
40	0.45	0.5	Near the limit
41	0.36	0.5	Below the limit
42	0.22	0.5	Below the limit
43	0.05	0.5	Below the limit
44	0.10	0.5	Below the limit
45	0.08	0.5	Below the limit
46	0.28	0.5	Below the limit
47	0.43	0.5	Near the limit
48	0.20	0.5	Below the limit
49	0.25	0.5	Below the limit
50	0.30	0.5	Below the limit
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

20230 of 13 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	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.22	0.5	Below the limit
45	0.07	0.5	Below the limit
46	0.16	0.5	Below the limit
47	0.13	0.5	Below the limit
48	0.28	0.5	Below the limit
49	0.05	0.5	Below the limit
50	0.13	0.5	Below the limit
51	0.13	0.5	Below the limit
52	0.20	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 38, 2026
Thermal delousing5 pens
Week 33, 2026
Thermal delousingWhole site
Week 27, 2026
Thermal delousingWhole site
Week 18, 2026
Thermal delousingWhole site

Show all 19

Week 6, 2026
Thermal delousingWhole site
Week 51, 2025
Thermal delousingWhole site
Week 39, 2025
Thermal delousingWhole site
Week 43, 2024
Thermal delousing4 pens
Week 42, 2024
Thermal delousing5 pens
Week 40, 2024
Thermal delousing4 pens
Week 37, 2024
Thermal delousing3 pens
Week 36, 2024
Thermal delousing3 pens
Week 33, 2024
Thermal delousing5 pens
Week 31, 2024
Thermal delousingWhole site
Week 10, 2024
Thermal delousingWhole site
Week 3, 2024
Thermal delousing1 pen
Week 2, 2024
Thermal delousingWhole site
Week 48, 2023
Thermal delousingWhole site
Week 44, 2023
Thermal delousing4 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

8 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
16 Aug 2026	Hordagut	Hageberg	22 h 12 min
15 Aug 2026	Hordagut	Hageberg	7 h 55 min
03 Jul 2026	Hordagut	Portevika disease or zone there	44 min
30 Jun 2026	Horda Pioneer	Brandaskuta	13 h 44 min
29 Jun 2026	Horda Pioneer	Brandaskuta	19 h 3 min
30 Apr 2026	Horda Pioneer	Langevågen	11 h 21 min
29 Apr 2026	Horda Pioneer	Langevågen	20 h 3 min
02 Feb 2026	Horda Pioneer	Soløy Ø	23 h 10 min
08 Dec 2025	Hordagut	Gråvika	2 h 14 min
10 Nov 2025	Horda Pioneer	Bleket	4 h 21 min
29 Sep 2025	Mowi Star	Alsåkervik	48 min
27 Sep 2025	Horda Pioneer	Portevika	41 min

Show 22 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
31 Aug 2025	Mowi Star	Ramsvik	52 min
26 Oct 2024	Horda Pioneer	Hiskholmen	14 h 53 min
16 Oct 2024	Horda Pioneer	Vadholmen	7 h 48 min
15 Oct 2024	Hordagut	Vadholmen	2 h 45 min
15 Oct 2024	Horda Pioneer	Vadholmen	15 h 53 min
14 Oct 2024	Hordagut	Vadholmen	31 h 58 min
14 Oct 2024	Horda Pioneer	Vadholmen	21 h 11 min
04 Oct 2024	Hauglaks	Skreda	9 h 17 min
02 Oct 2024	Hordagut	Skaganeset	15 h 57 min
12 Sep 2024	Hordagut	Sagen 2	38 min
10 Sep 2024	Hordagut	Sagen 2	6 h 30 min
09 Sep 2024	Hordagut	Sagen 2	11 h 33 min
08 Sep 2024	Hordagut	Sagen 2	7 h 10 min
12 Aug 2024	Hordagut	Sagen 2	37 h 50 min
12 Aug 2024	Firda Savior	no other farm	40 h 52 min
31 Jul 2024	Hordagut	Sagen 2	18 h 18 min
04 Jul 2024	Hordagut	Hågardsneset	13 h 0 min
03 Jul 2024	Hordagut	Hågardsneset	14 h 48 min
28 May 2024	Horda Pioneer	Aldalen	1 h 47 min
26 May 2024	Horda Pioneer	Aldalen	26 h 31 min
05 Mar 2024	Horda Pioneer	Grimsholmen	25 h 23 min
14 Jan 2024	Hordagut	Brattavika	18 h 6 min

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

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Blom Fiskeoppdrett AS	Week 40, 2023	Week 39, 2026
Steinvik Fiskefarm AS	Week 23, 2024	Week 27, 2024

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 2,340 tonnes

Licence	Type	Capacity	Holder
H AM 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Kobbevik Og Furuholmen Oppdrett AS
H FJ 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Kobbevik Og Furuholmen Oppdrett AS
H L 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ML 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ØN 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ØN 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ØN 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Erko Seafood AS
H ØN 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Erko Seafood AS
H ØN 0039	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Erko Seafood AS
SF A 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Steinvik Fiskefarm AS
SF A 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Steinvik Fiskefarm AS

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