Grænholmen

Site 45068 · Vestvågøy municipality · Production area 9, Vestfjorden og Vesterålen

Below the lice limit, week 39Operated by Isqueen AS

0.10Adult 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

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 1 vessel · latest 07 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 21–26 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	0.38	0.5	Below the limit
2	0.23	0.5	Below the limit
3	0.42	0.5	Near the limit
4	0.34	0.5	Below the limit
5	0.21	0.5	Below the limit
6	0.32	0.5	Below the limit
7	0.04	0.5	Below the limit
8	0.14	0.5	Below the limit
9	0.10	0.5	Below the limit
10	0.08	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.05	0.5	Below the limit
13	0.08	0.5	Below the limit
14	0.06	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.12	0.5	Below the limit
17	0.02	0.5	Below the limit
18	0.00	0.5	Below the limit
19	0.00	0.5	Below the limit
20	0.05	0.5	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.2	Below the limit
23	0.00	0.2	Below the limit
24	0.05	0.2	Below the limit
25	0.00	0.2	Below the limit
26	0.03	0.2	Below the limit
27	0.03	0.5	Below the limit
28	0.04	0.5	Below the limit
29	0.09	0.5	Below the limit
30	0.09	0.5	Below the limit
31	0.09	0.5	Below the limit
32	0.08	0.5	Below the limit
33	0.09	0.5	Below the limit
34	0.13	0.5	Below the limit
35	0.06	0.5	Below the limit
36	0.14	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.02	0.5	Below the limit
39	0.10	0.5	Below the limit

Earlier years

20250 of 39 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	0.33	0.5	Below the limit
2	0.18	0.5	Below the limit
3	0.23	0.5	Below the limit
4	0.20	0.5	Below the limit
5	0.13	0.5	Below the limit
6	0.08	0.5	Below the limit
7	0.13	0.5	Below the limit
8	0.05	0.5	Below the limit
9	0.07	0.5	Below the limit
10	0.03	0.5	Below the limit
11	0.03	0.5	Below the limit
12	0.00	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.03	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.00	0.5	Below the limit
17	0.00	0.5	Below the limit
18	0.00	0.5	Below the limit
19	0.00	0.5	Below the limit
20	0.00	0.5	Below the limit
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	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	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.10	0.5	Below the limit
38	0.12	0.5	Below the limit
39	0.13	0.5	Below the limit
40	0.08	0.5	Below the limit
41	0.06	0.5	Below the limit
42	0.07	0.5	Below the limit
43	0.03	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.37	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.20	0.5	Below the limit
49	0.35	0.5	Below the limit
50	0.38	0.5	Below the limit
51	0.20	0.5	Below the limit
52	0.33	0.5	Below the limit

20240 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	0.33	0.5	Below the limit
2	0.18	0.5	Below the limit
3	0.00	0.5	Below the limit
4	unknown	0.5	Reported without a count
5	0.15	0.5	Below the limit
6	0.20	0.5	Below the limit
7	unknown	0.5	Reported without a count
8	0.30	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.33	0.5	Below the limit
11	unknown	0.5	Reported without a count
12	0.39	0.5	Below the limit
13	unknown	0.5	Reported without a count
14	0.30	0.5	Below the limit
15	0.30	0.5	Below the limit
16	unknown	0.5	Reported without a count
17	0.25	0.5	Below the limit
18	0.30	0.5	Below the limit
19	0.28	0.5	Below the limit
20	0.30	0.5	Below the limit
21	0.10	0.2	Below the limit
22	0.10	0.2	Below the limit
23	0.08	0.2	Below the limit
24	0.10	0.2	Below the limit
25	0.05	0.2	Below the limit
26	0.10	0.2	Below the limit
27	0.20	0.5	Below the limit
28	0.18	0.5	Below the limit
29	0.21	0.5	Below the limit
30	0.25	0.5	Below the limit
31	0.18	0.5	Below the limit
32	0.16	0.5	Below the limit
33	0.10	0.5	Below the limit
34	0.10	0.5	Below the limit
35	0.18	0.5	Below the limit
36	0.27	0.5	Below the limit
37	0.35	0.5	Below the limit
38	0.30	0.5	Below the limit
39	0.40	0.5	Near the limit
40	0.35	0.5	Below the limit
41	0.39	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.08	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.10	0.5	Below the limit
47	0.20	0.5	Below the limit
48	0.25	0.5	Below the limit
49	0.28	0.5	Below the limit
50	0.35	0.5	Below the limit
51	0.35	0.5	Below the limit
52	0.33	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	0.37	0.5	Below the limit
50	0.33	0.5	Below the limit
51	0.27	0.5	Below the limit
52	0.27	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 42, 2024
Medicinal bathWhole site · Azamethiphos

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

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
07 Sep 2026	Grotanger	Brattberg	1 h 39 min
27 Aug 2026	Grotanger	Brattberg	2 h 32 min
27 May 2026	Grotanger	Sandholman	33 h 29 min
25 Dec 2025	Doennland	Soløya	1 h 30 min
22 Dec 2025	Doennland	Soløya	9 h 39 min
09 Aug 2025	Caspian	Kvanntoneset	2 h 20 min
23 May 2025	Skrova	Alsvåg	3 h 13 min
20 May 2025	Caspian	Sjåneset	2 h 44 min
18 May 2025	Skrova	Alsvåg	1 h 37 min
05 May 2025	Grotanger	Brattberg	2 h 51 min
09 Apr 2025	Caspian	Hestøy	2 h 44 min
01 Apr 2025	Caspian	Rotvika	1 h 55 min

Show 13 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
10 Mar 2025	Caspian	Breivoll	4 h 8 min
11 Oct 2024	Grotanger	Mikkelsøya	2 h 18 min
10 Oct 2024	Grotanger	Mikkelsøya	1 h 28 min
10 Oct 2024	Grotanger	Mikkelsøya	4 h 1 min
10 Oct 2024	Grotanger	Mikkelsøya	3 h 13 min
03 Sep 2024	Grotanger	Jennskarbotn	3 h 12 min
19 Aug 2024	Grotanger	Jennskarbotn	2 h 27 min
15 Aug 2024	Grotanger	Hallvardsøya	3 h 57 min
23 Jun 2024	Tonny	Klubben	1 h 25 min
01 Jun 2024	Grotanger	Jennskarbotn	3 h 23 min
21 May 2024	Grotanger	Alsvåg	11 h 17 min
07 May 2024	Tonny	Naustholmen	39 min
03 Jan 2024	Tonny	no other farm	53 min

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

Licences

Site MAB: 2,340 tonnes

Licence	Type	Capacity	Holder
N VV 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	796 t	Isqueen AS
N VV 0066	Visning / matfiskSalmon, Rainbow trout, Trout	780 t	Isqueen AS
N VV 0070	Kommersiell / matfiskSalmon, Rainbow trout, Trout	650 t	Isqueen AS
N VV 0071	Kommersiell / matfiskSalmon, Rainbow trout, Trout	650 t	Isqueen AS
N VV 0074	Kommersiell / matfiskSalmon, Rainbow trout, Trout	400 t	Isqueen AS

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