Ringja

Site 11964 · Tysvær municipality · Production area 2, Ryfylke

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi

0.34Adult 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 13 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

7Wellboat visits in 2026by 1 vessel · latest 02 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported50 salmon, September 2019Since 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

Show as table

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	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.01	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.03	0.5	Below the limit
33	0.02	0.5	Below the limit
34	0.05	0.5	Below the limit
35	0.12	0.5	Below the limit
36	0.19	0.5	Below the limit
37	0.36	0.5	Below the limit
38	0.33	0.5	Below the limit
39	0.34	0.5	Below the limit

Earlier years

20251 of 21 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	0.12	0.5	Below the limit
2	0.07	0.5	Below the limit
3	0.13	0.5	Below the limit
4	0.27	0.5	Below the limit
5	0.32	0.5	Below the limit
6	0.44	0.5	Near the limit
7	0.47	0.5	Near the limit
8	0.41	0.5	Near the limit
9	0.36	0.5	Below the limit
10	0.34	0.5	Below the limit
11	0.38	0.5	Below the limit
12	0.36	0.5	Below the limit
13	0.41	0.5	Near the limit
14	0.48	0.5	Near the limit
15	0.21	0.5	Below the limit
16	0.19	0.2	Near the limit
17	0.19	0.2	Near the limit
18	0.18	0.2	Near the limit
19	0.08	0.2	Below the limit
20	0.18	0.2	Near the limit
21	0.22	0.2	Above the limit
22	unknown	0.5	Reported without a count
23	unknown	0.5	Reported without a count
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	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

20240 of 28 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	Reported without a count
2	unknown	0.5	Reported without a count
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	Reported without a count
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	0.07	0.5	Below the limit
30	0.13	0.5	Below the limit
31	0.10	0.5	Below the limit
32	0.10	0.5	Below the limit
33	0.10	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.03	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	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.01	0.5	Below the limit
43	0.01	0.5	Below the limit
44	0.01	0.5	Below the limit
45	0.02	0.5	Below the limit
46	0.01	0.5	Below the limit
47	0.02	0.5	Below the limit
48	0.02	0.5	Below the limit
49	0.07	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.09	0.5	Below the limit
52	0.05	0.5	Below the limit

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
39	0.48	0.5	Near the limit
40	0.41	0.5	Near the limit
41	0.49	0.5	Near the limit
42	0.49	0.5	Near the limit
43	0.46	0.5	Near the limit
44	0.33	0.5	Below the limit
45	0.36	0.5	Below the limit
46	0.39	0.5	Below the limit
47	0.40	0.5	Near the limit
48	0.45	0.5	Near the limit
49	0.40	0.5	Near the limit
50	0.48	0.5	Near the limit
51	0.45	0.5	Near the limit
52	unknown	0.5	Reported without a count

Treatments

Norwegian Food Safety Authority

Week 18, 2025
Medicinal bath1 pen · Azamethiphos
Week 15, 2025
Medicinal bath3 pens · Azamethiphos
Week 48, 2023
Mechanical delousing1 pen
Week 44, 2023
Mechanical delousing2 pens

Show all 6

Week 43, 2023
Mechanical delousing2 pens
Week 40, 2023
Mechanical delousing2 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

13 Sep 2019
50 salmon escapedCause: Under skifte av nok kom sammenføyning mellom gammel og ny not under vann noen minutter pga noen av rekkverk nøtene hang i bøyde seg. · Directorate of Fisheries

Wellboat visits

7 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
02 Jul 2026	Ronja Maloy	Vindsvik	2 h 34 min
02 Jul 2026	Ronja Maloy	Vindsvik	2 h 11 min
01 Jul 2026	Ronja Maloy	Vindsvik	2 h 48 min
01 Jul 2026	Ronja Maloy	Vindsvik	2 h 46 min
30 Jun 2026	Ronja Maloy	Vindsvik	2 h 48 min
30 Jun 2026	Ronja Maloy	Vindsvik	3 h 28 min
29 Jun 2026	Ronja Maloy	Vindsvik	2 h 35 min
15 Jun 2025	Ronja Merdoe	no other farm	4 h 56 min
11 May 2025	Ronja Merdoe	Trommo	3 h 5 min
28 Apr 2025	Ronja Maloy	Smedholmen	1 h 28 min
28 Apr 2025	Ronja Maloy	Smedholmen	7 h 13 min
21 Apr 2025	Ronja Merdoe	Trommo	6 h 30 min

Show 24 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
16 Apr 2025	Tauranga	Kjeahola	4 h 56 min
15 Apr 2025	Ronja Merdoe	Trommo	6 h 34 min
09 Apr 2025	Tauranga	Halsavika	6 h 54 min
09 Apr 2025	Ronja Maloy	Munkholmen	2 h 40 min
08 Apr 2025	Ronja Maloy	Munkholmen	7 h 1 min
08 Apr 2025	Ronja Merdoe	Kobbavika	4 h 57 min
08 Apr 2025	Ronja Maloy	Munkholmen	8 h 42 min
07 Apr 2025	Ronja Maloy	Munkholmen	6 h 17 min
07 Apr 2025	Ronja Maloy	Munkholmen	4 h 6 min
20 Feb 2025	Ronja Merdoe	Skipningsdalen	5 h 50 min
19 Feb 2025	Tauranga	Skipningsdalen	7 h 57 min
17 Feb 2025	Tauranga	Skipningsdalen	8 h 7 min
11 Feb 2025	Ronja Merdoe	Kobbavika	4 h 32 min
06 Dec 2024	Tauranga	Buksevika	6 h 57 min
25 Jul 2024	Navoey	Djupestallen	5 h 47 min
23 Jun 2024	Ronja Mistral	Smal Skar	33 min
22 Jun 2024	Ronja Mistral	Smal Skar	4 h 53 min
20 Jun 2024	Ronja Mistral	Smal Skar	4 h 11 min
12 Jun 2024	Ronja Azul	Vindsvik	51 min
11 Jun 2024	Ronja Azul	Vindsvik	2 h 42 min
11 Jan 2024	Ronja Merdoe	Munkholmen	4 h 32 min
10 Jan 2024	Tauranga	Munkholmen	8 h 17 min
09 Jan 2024	Ronja Merdoe	Munkholmen	2 h 12 min
08 Jan 2024	Tauranga	Munkholmen	2 h 27 min

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

Licences

Site MAB: 4,680 tonnes

Licence	Type	Capacity	Holder
R F 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	846 t	Finnøy Fisk AS
R F 0030	Kommersiell / matfiskSalmon, Rainbow trout, Trout	845 t	Finnøy Fisk AS
R HM 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R HM 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R TV 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R TV 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS

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