Onarøy

Site 10136 · Tysnes municipality · Production area 3, Karmøy til Sotra

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

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 17 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

6Wellboat visits in 2026by 3 different vessels · latest 23 Jun 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	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	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.01	0.5	Below the limit
32	0.01	0.5	Below the limit
33	0.00	0.5	Below the limit
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	0.01	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit
40	0.01	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	0.28	0.5	Below the limit
2	0.14	0.5	Below the limit
3	0.20	0.5	Below the limit
4	0.46	0.5	Near the limit
5	0.37	0.5	Below the limit
6	0.49	0.5	Near the limit
7	0.48	0.5	Near the limit
8	0.48	0.5	Near the limit
9	0.48	0.5	Near the limit
10	0.48	0.5	Near the limit
11	0.49	0.5	Near the limit
12	0.44	0.5	Near the limit
13	0.38	0.5	Below the limit
14	0.23	0.5	Below the limit
15	0.25	0.5	Below the limit
16	0.16	0.2	Below the limit
17	0.18	0.2	Near the limit
18	0.13	0.2	Below the limit
19	0.05	0.2	Below the limit
20	0.04	0.2	Below the limit
21	0.05	0.2	Below the limit
22	0.05	0.5	Below the limit
23	0.12	0.5	Below the limit
24	0.14	0.5	Below the limit
25	0.27	0.5	Below the limit
26	0.49	0.5	Near the limit
27	0.49	0.5	Near the limit
28	0.47	0.5	Near the limit
29	0.49	0.5	Near the limit
30	0.48	0.5	Near the limit
31	0.43	0.5	Near the limit
32	0.48	0.5	Near the limit
33	0.44	0.5	Near the limit
34	0.48	0.5	Near the limit
35	0.40	0.5	Near the limit
36	0.40	0.5	Near the limit
37	0.40	0.5	Near the limit
38	0.45	0.5	Near the limit
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

20240 of 29 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	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	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.10	0.5	Below the limit
30	0.11	0.5	Below the limit
31	0.08	0.5	Below the limit
32	0.05	0.5	Below the limit
33	0.05	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.02	0.5	Below the limit
36	0.03	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.01	0.5	Below the limit
39	0.00	0.5	Below the limit
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	0.00	0.5	Below the limit
45	0.01	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.01	0.5	Below the limit
48	0.08	0.5	Below the limit
49	0.07	0.5	Below the limit
50	0.10	0.5	Below the limit
51	0.15	0.5	Below the limit
52	0.21	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 28, 2025
Medicinal bath4 pens · Azamethiphos
Week 27, 2025
Medicinal bath4 pens · Azamethiphos
Week 2, 2025
Thermal delousing, Freshwater treatment2 pens
Week 1, 2025
Thermal delousing, Freshwater treatment2 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

6 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
23 Jun 2026	Seifjell	Klungsholmen	6 h 47 min
22 Jun 2026	Mowi Star	Kjeppevikholmen	1 h 21 min
17 Jun 2026	Neptun	Haugsnesvåg	4 h 50 min
15 Jun 2026	Neptun	Storevik	3 h 12 min
10 Jun 2026	Seifjell	Oltesvik	1 h 39 min
09 Jun 2026	Seifjell	Oltesvik	2 h 43 min
24 Sep 2025	Kristoffer Tronds	Porsvika	2 h 12 min
13 Sep 2025	Kristoffer Tronds	Sunde	2 h 22 min
31 Aug 2025	Kristoffer Tronds	Sunde	3 h 55 min
24 Aug 2025	Kristoffer Tronds	Sunde	4 h 52 min
17 Aug 2025	Kristoffer Tronds	Sunde	1 h 19 min
17 Aug 2025	Kristoffer Tronds	Lindarholmen disease or zone there	2 h 27 min

Show 26 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
10 Aug 2025	Kristoffer Tronds	Sunde	1 h 35 min
09 Aug 2025	Kristoffer Tronds	Sunde	2 h 31 min
28 Jul 2025	Kristoffer Tronds	Bjelkavik	3 h 39 min
26 Jul 2025	Ro Master	Sunde	4 h 20 min
23 Jul 2025	Ro Master	Sunde	5 h 38 min
20 Jul 2025	Kristoffer Tronds	Maradalen	3 h 33 min
11 Jul 2025	Kristoffer Tronds	Sunde	5 h 51 min
10 Jul 2025	Kristoffer Tronds	Sunde	3 h 52 min
10 Jul 2025	Kristoffer Tronds	Sunde	3 h 38 min
09 Jul 2025	Kristoffer Tronds	Sunde	7 h 20 min
09 Jul 2025	Kristoffer Tronds	Sunde	2 h 11 min
05 Jul 2025	Kristoffer Tronds	Bjelkavik	6 h 20 min
05 Jul 2025	Kristoffer Tronds	Bjelkavik	3 h 20 min
04 Jul 2025	Kristoffer Tronds	Bjelkavik	4 h 55 min
04 Jul 2025	Kristoffer Tronds	Bjelkavik	6 h 3 min
04 Jul 2025	Kristoffer Tronds	Bjelkavik	2 h 26 min
15 Jun 2025	Navoey	no other farm	20 h 0 min
14 Jun 2025	Navoey	no other farm	37 min
14 Jun 2025	Navoey	no other farm	8 h 5 min
06 Jan 2025	Kristoffer Tronds	Sunde	12 h 0 min
03 Jan 2025	Kristoffer Tronds	Sunde	9 h 22 min
19 Dec 2024	Navoey	Haugsnesvåg	4 h 5 min
25 Nov 2024	Navoey	Flornes	34 h 21 min
23 Nov 2024	Navoey	Flornes	30 h 43 min
23 Nov 2024	Navoey	Flornes	8 h 8 min
10 Jun 2024	Ronja Mistral	Nordeimsøyna	6 h 58 min

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

Licences

Site MAB: 3,900 tonnes

Licence	Type	Capacity	Holder
H B 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H B 0029	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H E 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H K 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Fjelberg Fjordbruk AS
H K 0035	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Fjelberg Fjordbruk AS
H T 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H T 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H T 0016	Kommersiell / matfiskSalmon, Rainbow trout, Trout	696 t	Nordsjø Fjordbruk AS
H T 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	695 t	Nordsjø Fjordbruk AS

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