Gudmundset

Site 12265 · Ålesund municipality · Production area 5, Stadt til Hustadvika

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

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

5Lice treatments in 2026Latest: Thermal delousing, week 39, 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

16Wellboat visits in 2026by 6 different vessels · latest 04 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	0.20	0.5	Below the limit
2	0.23	0.5	Below the limit
3	0.36	0.5	Below the limit
4	0.40	0.5	Near the limit
5	0.09	0.5	Below the limit
6	0.17	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.22	0.5	Below the limit
9	0.21	0.5	Below the limit
10	0.24	0.5	Below the limit
11	0.30	0.5	Below the limit
12	0.22	0.5	Below the limit
13	0.25	0.5	Below the limit
14	0.28	0.5	Below the limit
15	0.18	0.5	Below the limit
16	0.18	0.2	Near the limit
17	0.04	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.13	0.2	Below the limit
20	0.18	0.2	Near the limit
21	0.15	0.2	Below the limit
22	0.40	0.5	Near the limit
23	0.09	0.5	Below the limit
24	0.10	0.5	Below the limit
25	0.15	0.5	Below the limit
26	0.15	0.5	Below the limit
27	0.11	0.5	Below the limit
28	0.25	0.5	Below the limit
29	0.30	0.5	Below the limit
30	0.40	0.5	Near the limit
31	0.45	0.5	Near the limit
32	0.05	0.5	Below the limit
33	0.16	0.5	Below the limit
34	0.18	0.5	Below the limit
35	0.23	0.5	Below the limit
36	0.30	0.5	Below the limit
37	0.27	0.5	Below the limit
38	0.45	0.5	Near the limit
39	0.10	0.5	Below the limit

Earlier years

20250 of 38 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	0.00	0.5	Below the limit
16	0.00	0.2	Below the limit
17	0.00	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.00	0.2	Below the limit
21	0.02	0.2	Below the limit
22	0.07	0.5	Below the limit
23	0.07	0.5	Below the limit
24	0.07	0.5	Below the limit
25	0.05	0.5	Below the limit
26	0.12	0.5	Below the limit
27	0.17	0.5	Below the limit
28	0.05	0.5	Below the limit
29	0.35	0.5	Below the limit
30	0.47	0.5	Near the limit
31	0.05	0.5	Below the limit
32	0.20	0.5	Below the limit
33	0.40	0.5	Near the limit
34	0.45	0.5	Near the limit
35	0.10	0.5	Below the limit
36	0.19	0.5	Below the limit
37	0.26	0.5	Below the limit
38	0.30	0.5	Below the limit
39	0.47	0.5	Near the limit
40	0.08	0.5	Below the limit
41	0.20	0.5	Below the limit
42	0.27	0.5	Below the limit
43	0.49	0.5	Near the limit
44	0.11	0.5	Below the limit
45	0.20	0.5	Below the limit
46	0.23	0.5	Below the limit
47	0.28	0.5	Below the limit
48	0.33	0.5	Below the limit
49	0.45	0.5	Near the limit
50	0.09	0.5	Below the limit
51	0.10	0.5	Below the limit
52	0.14	0.5	Below the limit

20240 of 34 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	0.16	0.5	Below the limit
2	0.11	0.5	Below the limit
3	0.11	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.18	0.5	Below the limit
6	0.10	0.5	Below the limit
7	0.22	0.5	Below the limit
8	0.20	0.5	Below the limit
9	0.27	0.5	Below the limit
10	0.30	0.5	Below the limit
11	0.34	0.5	Below the limit
12	0.38	0.5	Below the limit
13	0.45	0.5	Near the limit
14	0.02	0.5	Below the limit
15	0.02	0.5	Below the limit
16	0.04	0.2	Below the limit
17	0.00	0.2	Below the limit
18	0.04	0.2	Below the limit
19	0.04	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.02	0.2	Below the limit
22	0.20	0.5	Below the limit
23	0.23	0.5	Below the limit
24	0.30	0.5	Below the limit
25	0.13	0.5	Below the limit
26	0.20	0.5	Below the limit
27	0.28	0.5	Below the limit
28	0.25	0.5	Below the limit
29	0.30	0.5	Below the limit
30	0.32	0.5	Below the limit
31	0.35	0.5	Below the limit
32	0.38	0.5	Below the limit
33	0.42	0.5	Near the limit
34	0.35	0.5	Below the limit
35	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	unknown	0.5	Not reported
38	unknown	0.5	Not reported
39	unknown	0.5	Not reported
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	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 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	0.20	0.5	Below the limit
41	0.18	0.5	Below the limit
42	0.41	0.5	Near the limit
43	0.43	0.5	Near the limit
44	0.44	0.5	Near the limit
45	0.11	0.5	Below the limit
46	0.27	0.5	Below the limit
47	0.33	0.5	Below the limit
48	0.31	0.5	Below the limit
49	0.46	0.5	Near the limit
50	0.48	0.5	Near the limit
51	0.06	0.5	Below the limit
52	0.10	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Thermal delousing2 pens
Week 32, 2026
Mechanical delousingWhole site
Week 23, 2026
Mechanical delousingWhole site
Week 17, 2026
Medicinal bathWhole site · Azamethiphos

Show all 15

Week 5, 2026
Thermal delousing4 pens
Week 50, 2025
Thermal delousing, Freshwater treatment3 pens
Week 44, 2025
Thermal delousing3 pens
Week 40, 2025
Thermal delousingWhole site
Week 35, 2025
Thermal delousingWhole site
Week 31, 2025
Thermal delousingWhole site
Week 21, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 25, 2024
Thermal delousing2 pens
Week 14, 2024
Thermal delousing1 pen
Week 51, 2023
Other treatmentWhole site · 5 timer holdetid ferskvann(lus og AGD)deretter behandlet med termolicer ut av brønn båt. brbåt var roventure(rostein)
Week 45, 2023
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

16 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
04 Aug 2026	Ro Sailor	Gjermundnes	4 h 34 min
04 Aug 2026	Ro Sailor	Gjermundnes	3 h 47 min
04 Jun 2026	Ro Sailor	no other farm	14 h 8 min
02 Jun 2026	Ro Master	Svartekari	1 h 11 min
24 May 2026	Robris	Hendneset	1 h 25 min
23 May 2026	Robris	Hendneset	1 h 27 min
23 Apr 2026	Ro Venture	Svartekari	1 h 0 min
23 Apr 2026	Ro Venture	Svartekari	1 h 10 min
22 Apr 2026	Ro Fjord	Rogne	1 h 24 min
22 Apr 2026	Ro Venture	Svartekari	1 h 52 min
22 Apr 2026	Rohav	Rindarøy	1 h 12 min
22 Apr 2026	Ro Venture	Svartekari	1 h 12 min

Show 29 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
22 Apr 2026	Rohav	Dryna	1 h 16 min
30 Mar 2026	Rohav	Hesteneset	2 h 2 min
29 Jan 2026	Ro Venture	Marøya	6 h 34 min
28 Jan 2026	Ro Venture	Marøya	5 h 3 min
27 Dec 2025	Ro Spirit	Seterneset	1 h 19 min
11 Dec 2025	Rohav	Rindarøy	1 h 28 min
10 Dec 2025	Ro Fjell	Bugane	17 h 54 min
23 Nov 2025	Langsund	Kråkenes	1 h 54 min
29 Oct 2025	Ro Fjell	Setevika	8 h 45 min
04 Oct 2025	Ro Fjell	Bleket	20 h 1 min
29 Aug 2025	Ro Fjell	Langeråa disease or zone there	11 h 53 min
31 Jul 2025	Ro Fjell	Skjortneset II	6 h 34 min
06 Apr 2025	Langsund	Hovden	1 h 9 min
07 Sep 2024	Havoern	Marøy Nø	1 h 3 min
06 Sep 2024	Rostein	Hesteneset	1 h 8 min
31 Aug 2024	Ro Fjord	Eggesbønes	1 h 26 min
29 Aug 2024	Rostein	Hesteneset	2 h 20 min
22 Jul 2024	Robris	Brattholmen disease or zone there	1 h 11 min
16 Jul 2024	Langsund	Overåneset	1 h 54 min
22 Jun 2024	Rohav	Rindarøy	14 h 57 min
22 Jun 2024	Ro Venture	Skjortneset II	16 h 40 min
27 May 2024	Robris	Hesteneset	1 h 22 min
26 May 2024	Robris	Hesteneset	1 h 32 min
20 May 2024	Rostein	Søreide	1 h 13 min
20 Apr 2024	Ro Fjord	Sagelva	1 h 8 min
17 Apr 2024	Ro Chief	Veiesund	1 h 23 min
04 Apr 2024	Ro Venture	Opshaugvik Land	18 h 57 min
03 Apr 2024	Ro Venture	Opshaugvik Land	17 h 37 min
02 Apr 2024	Ro Venture	Opshaugvik Land	10 h 8 min

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

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
M MD 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	734 t	Salmar Oppdrett AS
M SJ 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	734 t	Salmar Oppdrett AS
M SJ 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	734 t	Salmar Oppdrett AS
M SM 0041	Kommersiell / matfiskSalmon, Rainbow trout, Trout	769 t	Prophylaxia AS
M VS 0025	Kommersiell / matfisk-grønn cSalmon, Rainbow trout, Trout	780 t	Norsk Edelfisk Havbruk AS

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