Hyseneset

Site 34397 · Gulen municipality · Production area 4, Nordhordland til Stadt

Below the lice limit, week 39Operated by Firda Havbruk AS

0.00Adult 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 3 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

0Lice treatments in 2026None recorded2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

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

3Wellboat visits in 2026by 2 different vessels · latest 08 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported289 rainbow trout, November 2023Since 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	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	unknown	0.5	Not reported
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit

Earlier years

20251 of 52 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	0.26	0.5	Below the limit
2	0.32	0.5	Below the limit
3	0.32	0.5	Below the limit
4	0.39	0.5	Below the limit
5	0.37	0.5	Below the limit
6	0.39	0.5	Below the limit
7	0.22	0.5	Below the limit
8	0.18	0.5	Below the limit
9	0.17	0.5	Below the limit
10	0.06	0.5	Below the limit
11	0.08	0.5	Below the limit
12	0.10	0.5	Below the limit
13	0.19	0.5	Below the limit
14	0.17	0.5	Below the limit
15	0.18	0.5	Below the limit
16	0.08	0.2	Below the limit
17	0.12	0.2	Below the limit
18	0.18	0.2	Near the limit
19	0.08	0.2	Below the limit
20	0.16	0.2	Below the limit
21	0.14	0.2	Below the limit
22	0.18	0.5	Below the limit
23	0.23	0.5	Below the limit
24	0.19	0.5	Below the limit
25	0.23	0.5	Below the limit
26	0.20	0.5	Below the limit
27	0.36	0.5	Below the limit
28	0.46	0.5	Near the limit
29	0.28	0.5	Below the limit
30	0.35	0.5	Below the limit
31	0.44	0.5	Near the limit
32	0.41	0.5	Near the limit
33	0.39	0.5	Below the limit
34	0.34	0.5	Below the limit
35	0.38	0.5	Below the limit
36	0.24	0.5	Below the limit
37	0.34	0.5	Below the limit
38	0.29	0.5	Below the limit
39	0.45	0.5	Near the limit
40	0.41	0.5	Near the limit
41	0.25	0.5	Below the limit
42	0.25	0.5	Below the limit
43	1.06	0.5	Above the limit
44	0.38	0.5	Below the limit
45	0.05	0.5	Below the limit
46	0.22	0.5	Below the limit
47	0.48	0.5	Near the limit
48	0.46	0.5	Near the limit
49	0.46	0.5	Near the limit
50	0.46	0.5	Near the limit
51	0.43	0.5	Near the limit
52	0.48	0.5	Near the limit

20240 of 31 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	0.23	0.5	Below the limit
2	0.25	0.5	Below the limit
3	0.30	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.15	0.5	Below the limit
6	0.20	0.5	Below the limit
7	0.35	0.5	Below the limit
8	0.45	0.5	Near the limit
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	0.00	0.5	Below the limit
31	0.08	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.38	0.5	Below the limit
34	0.40	0.5	Near the limit
35	0.03	0.5	Below the limit
36	0.15	0.5	Below the limit
37	0.20	0.5	Below the limit
38	0.23	0.5	Below the limit
39	0.43	0.5	Near the limit
40	0.41	0.5	Near the limit
41	0.21	0.5	Below the limit
42	0.28	0.5	Below the limit
43	0.29	0.5	Below the limit
44	0.18	0.5	Below the limit
45	0.04	0.5	Below the limit
46	0.15	0.5	Below the limit
47	0.28	0.5	Below the limit
48	0.36	0.5	Below the limit
49	0.18	0.5	Below the limit
50	0.07	0.5	Below the limit
51	0.09	0.5	Below the limit
52	0.18	0.5	Below the limit

20230 of 4 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	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	0.33	0.5	Below the limit
50	0.30	0.5	Below the limit
51	0.43	0.5	Near the limit
52	0.38	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 45, 2025
Other treatment5 pens · Optilicer
Week 44, 2025
Other treatment2 pens · Optilicer
Week 42, 2025
Other treatment1 pen · Optilicer
Week 41, 2025
Other treatment4 pens · Optilicer

Show all 24

Week 36, 2025
Other treatment2 pens · Optilicer
Week 35, 2025
Other treatment3 pens · Optilicer
Week 34, 2025
Other treatment1 pen · Optilicer
Week 33, 2025
Other treatment3 pens · Optilicer
Week 32, 2025
Other treatment1 pen · Optilicer
Week 24, 2025
Other treatment3 pens · Optilicer
Week 22, 2025
Thermal delousing1 pen
Week 20, 2025
Other treatment2 pens · Optilicer
Week 19, 2025
Other treatment2 pens · Optilicer
Week 16, 2025
Other treatment2 pens · Ferskvannsbehandling
Week 10, 2025
Other treatment2 pens · Ferskvannsbehandling
Week 8, 2025
Other treatment2 pens · Ferskvannsbehandling
Week 7, 2025
Other treatment3 pens · Optilicer
Week 50, 2024
Other treatment1 pen · Optilicer
Week 49, 2024
Other treatment3 pens · Optilicer
Week 46, 2024
Medicinal feed4 pens · Emamectin benzoat
Week 45, 2024
Other treatment2 pens · Optilicer
Week 36, 2024
Medicinal feedWhole site · Emamectin benzoat
Week 35, 2024
Other treatmentWhole site · Ferskvannsbehandling
Week 1, 2024
Thermal delousing1 pen

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

16 Nov 2023
289 rainbow trout escapedrecaptured 1 · Directorate of Fisheries

Wellboat visits

3 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
08 Sep 2026	Langsund	Ådnekvamme	36 min
01 Sep 2026	Mowi Star	Bogen	1 h 16 min
31 Aug 2026	Mowi Star	Bogen	3 h 1 min
03 Nov 2025	Firda Savior	Nesevågen	3 h 47 min
23 Oct 2025	Tonny	Elveneset disease or zone there	44 min
18 Aug 2025	Firda Savior	Nesevågen	7 h 23 min
14 Jun 2025	Firda Savior	no other farm	4 h 27 min
29 May 2025	Firda Eir	Storlia	8 h 47 min
28 May 2025	Firda Eir	Storlia	12 h 30 min
27 May 2025	Firda Eir	Storlia	6 h 55 min
19 Apr 2025	Firda Savior	Nesevågen	11 h 4 min
19 Apr 2025	Hordagut	Grunneneset	7 h 18 min

Show 12 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
18 Apr 2025	Hordagut	Grunneneset	16 h 39 min
04 Mar 2025	Hordagut	Fyllingsnes S	8 h 30 min
04 Mar 2025	Hordagut	Fyllingsnes S	2 h 4 min
21 Feb 2025	Hordagut	Vikane	13 h 16 min
09 Dec 2024	Firda Savior	Nesevågen	7 h 45 min
08 Dec 2024	Firda Savior	Nesevågen	7 h 43 min
05 Nov 2024	Firda Savior	Nesevågen	5 h 8 min
08 Oct 2024	Langsund	Øklandsvågen	57 min
07 Oct 2024	Langsund	Øklandsvågen	30 min
05 Oct 2024	Langsund	Øklandsvågen	59 min
17 Jul 2024	Mowi Star	Tepstad	47 min
07 Jan 2024	Firda Savior	no other farm	6 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
Firda Sjøfarmer AS	Week 49, 2023	Week 52, 2025
Firda Havbruk AS	Week 37, 2026	Week 39, 2026

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

Licences

Site MAB: 5,460 tonnes

Licence	Type	Capacity	Holder
H FJ 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Engesund 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
SF A 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF A 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF A 0030	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF A 0031	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF A 0032	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF G 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Firda Havbruk AS
SF G 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0038	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0051	Visning / matfiskSalmon, Rainbow trout, Trout	500 t	Firda Eiendom AS
SF H 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF H 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF N 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS

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