Rataren II

Site 31959 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag

Status unknown: not reported in week 39Operated by Salmar Oppdrett AS · group SalMar

unknownAdult female lice per fishNo count in week 39. Latest: 0.25 in week 52, 2025Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

unknownWeeks above the limit in 2026No weeks with a count in 2026Calculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

unknownLice treatments in 2026No lice reports in 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Active disease casesPD, suspected 04 Feb 2026Register since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

22Wellboat visits in 2026by 4 different vessels · latest 27 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.

2025

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, 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	0.00	0.5	Below the limit
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	0.00	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.00	0.5	Below the limit
24	0.04	0.5	Below the limit
25	0.01	0.5	Below the limit
26	0.04	0.5	Below the limit
27	0.04	0.5	Below the limit
28	0.12	0.5	Below the limit
29	0.24	0.5	Below the limit
30	0.33	0.5	Below the limit
31	0.22	0.5	Below the limit
32	0.27	0.5	Below the limit
33	0.80	0.5	Above the limit
34	0.34	0.5	Below the limit
35	0.07	0.5	Below the limit
36	0.25	0.5	Below the limit
37	0.19	0.5	Below the limit
38	0.26	0.5	Below the limit
39	1.34	0.5	Above the limit
40	2.94	0.5	Above the limit
41	0.26	0.5	Below the limit
42	0.44	0.5	Near the limit
43	0.35	0.5	Below the limit
44	0.25	0.5	Below the limit
45	0.26	0.5	Below the limit
46	0.27	0.5	Below the limit
47	0.14	0.5	Below the limit
48	0.30	0.5	Below the limit
49	0.37	0.5	Below the limit
50	0.07	0.5	Below the limit
51	0.21	0.5	Below the limit
52	0.25	0.5	Below the limit

Earlier years

20242 of 37 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	0.36	0.5	Below the limit
2	0.35	0.5	Below the limit
3	0.21	0.5	Below the limit
4	0.30	0.5	Below the limit
5	0.28	0.5	Below the limit
6	0.07	0.5	Below the limit
7	0.11	0.5	Below the limit
8	0.13	0.5	Below the limit
9	0.11	0.5	Below the limit
10	0.16	0.5	Below the limit
11	0.12	0.5	Below the limit
12	0.16	0.5	Below the limit
13	0.21	0.5	Below the limit
14	0.18	0.5	Below the limit
15	0.15	0.5	Below the limit
16	0.15	0.2	Below the limit
17	0.17	0.2	Near the limit
18	0.14	0.2	Below the limit
19	0.07	0.2	Below the limit
20	0.04	0.2	Below the limit
21	0.07	0.2	Below the limit
22	0.23	0.5	Below the limit
23	0.23	0.5	Below the limit
24	0.49	0.5	Near the limit
25	0.23	0.5	Below the limit
26	0.46	0.5	Near the limit
27	0.16	0.5	Below the limit
28	0.18	0.5	Below the limit
29	0.31	0.5	Below the limit
30	0.47	0.5	Near the limit
31	0.47	0.5	Near the limit
32	0.73	0.5	Above the limit
33	0.25	0.5	Below the limit
34	0.31	0.5	Below the limit
35	3.01	0.5	Above the limit
36	0.45	0.5	Near the limit
37	0.37	0.5	Below the limit
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

20232 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	0.14	0.5	Below the limit
41	0.17	0.5	Below the limit
42	0.12	0.5	Below the limit
43	0.16	0.5	Below the limit
44	0.31	0.5	Below the limit
45	0.38	0.5	Below the limit
46	1.51	0.5	Above the limit
47	1.39	0.5	Above the limit
48	0.24	0.5	Below the limit
49	0.25	0.5	Below the limit
50	0.26	0.5	Below the limit
51	0.36	0.5	Below the limit
52	0.39	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 50, 2025
Mechanical delousing7 pens
Week 47, 2025
Mechanical delousing7 pens
Week 41, 2025
Other treatment4 pens · Ferskvann/Thermolicer
Week 40, 2025
Other treatment3 pens · Ferskvann/Thermolicer

Show all 23

Week 35, 2025
Mechanical delousing7 pens
Week 34, 2025
Mechanical delousing7 pens
Week 31, 2025
Mechanical delousing7 pens
Week 36, 2024
Other treatment5 pens · Hydrolicer
Week 33, 2024
Other treatment5 pens · Hydrolicer
Week 32, 2024
Other treatment1 pen · Hydrolicer
Week 31, 2024
Other treatment6 pens · Hydrolicer
Week 28, 2024
Other treatment1 pen · Hydrolicer
Week 27, 2024
Other treatment5 pens · Hydrolicer
Week 25, 2024
Other treatment3 pens · Hydrolicer
Week 24, 2024
Other treatment4 pens · Hydrolicer
Week 19, 2024
Other treatment3 pens · Hydrolicer
Week 18, 2024
Other treatment4 pens · Hydrolicer
Week 6, 2024
Other treatment1 pen · Ferskvann/ Hydrolicer
Week 3, 2024
Other treatment3 pens · Ferskvann/ Hydrolicer
Week 2, 2024
Other treatment3 pens · Ferskvann/ Hydrolicer
Week 48, 2023
Other treatment4 pens · Ferskvann/ Hydrolicer
Week 47, 2023
Other treatment3 pens · Ferskvann/ Hydrolicer
Week 40, 2023
Other treatment3 pens · Hydrolicer

Disease

Norwegian Food Safety Authority

04 Feb 2026
Pancreas disease (PD): suspectedStatus: active · Subtype SAV2 · started 04 Feb 2026 · Norwegian Food Safety Authority
14 Dec 2024
Pancreas disease (PD): closedSubtype SAV2 · started 18 Jun 2024 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

22 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
27 Aug 2026	Froy Odin	Nordskag	3 h 28 min
26 Aug 2026	Froy Odin	Rataren disease or zone there	4 h 36 min
25 Aug 2026	Froy Odin	Rataren disease or zone there	4 h 40 min
19 Aug 2026	Ronja Princess	Nordskag	8 h 59 min
18 Aug 2026	Ronja Princess	Nordskag	9 h 4 min
17 Aug 2026	Ronja Princess	Singsholmen	7 h 52 min
16 Aug 2026	Froy Odin	Nordskag	3 h 57 min
13 Aug 2026	Froy Odin	Nordskag	10 h 7 min
12 Aug 2026	Froy Odin	Nordskag	9 h 32 min
12 Aug 2026	Froy Odin	Nordskag	2 h 23 min
09 Aug 2026	Froy Odin	Nordskag	3 h 50 min
06 Aug 2026	Froy Odin	Rataren disease or zone there	2 h 3 min

Show 50 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
05 Aug 2026	Froy Odin	Nordskag	3 h 37 min
10 Jul 2026	Ro Vision	Rataren disease or zone there	11 h 5 min
08 Jul 2026	Ro Vision	Rataren disease or zone there	31 h 42 min
08 Jul 2026	Ro Vision	Nordskag	13 h 11 min
25 Jun 2026	Ronja Follafoss	Nordskag	5 h 53 min
24 Jun 2026	Froy Odin	Nordskag	3 h 7 min
23 Jun 2026	Ronja Follafoss	Nordskag	4 h 4 min
23 Jun 2026	Froy Odin	Rataren disease or zone there	1 h 3 min
14 Jun 2026	Ro Vision	Rataren disease or zone there	8 h 3 min
12 Jun 2026	Ro Vision	Nordskag	40 h 18 min
07 Oct 2025	Ro Vision	Rataren	11 h 0 min
06 Oct 2025	Ro Vision	Rataren	16 h 40 min
05 Oct 2025	Ro Vision	Rataren	2 h 32 min
05 Oct 2025	Ro Vision	Rataren	1 h 40 min
03 Oct 2025	Ro Vision	Rataren	9 h 10 min
26 Sep 2025	Ro Vision	Tristeinen	2 h 20 min
22 Aug 2025	Aasvaerfjord	Ruggstein	25 h 22 min
22 Aug 2025	Aasvaerfjord	Ruggstein	14 h 2 min
02 Aug 2025	Ro Vision	Rataren	1 h 11 min
02 Aug 2025	Ro Vision	Rataren	2 h 39 min
02 Aug 2025	Ro Vision	Rataren	2 h 38 min
02 Aug 2025	Ro Vision	Rataren	2 h 36 min
01 Aug 2025	Ro Vision	Rataren	17 h 47 min
24 Apr 2025	Ronja Aurora	Dryna	2 h 45 min
08 Apr 2025	Ronja Aurora	Dryna	3 h 5 min
02 Apr 2025	Ronja Vita	Ørnøya II	2 h 55 min
24 Sep 2024	Ro Vision	Nordskag	2 h 31 min
20 Sep 2024	Ro Vision	Nordskag	1 h 54 min
20 Sep 2024	Ro Vision	Nordskag	1 h 27 min
19 Sep 2024	Ro Vision	Nordskag	2 h 33 min
19 Sep 2024	Ro Vision	Nordskag	1 h 6 min
19 Sep 2024	Ro Vision	Nordskag	1 h 21 min
05 Sep 2024	Froy Odin	Rataren disease or zone there	11 h 28 min
05 Sep 2024	Froy Odin	Rataren disease or zone there	2 h 17 min
04 Sep 2024	Froy Odin	Rataren disease or zone there	22 h 4 min
03 Sep 2024	Froy Odin	Rataren disease or zone there	4 h 17 min
03 Sep 2024	Froy Odin	Rataren disease or zone there	3 h 20 min
03 Sep 2024	Froy Odin	Rataren disease or zone there	3 h 17 min
02 Sep 2024	Froy Odin	Nordskag	1 h 50 min
02 Sep 2024	Froy Odin	Nordskag	1 h 12 min
01 Sep 2024	Froy Odin	Nordskag	1 h 17 min
04 Jul 2024	Ronja Princess	Rataren disease or zone there	3 h 25 min
11 Feb 2024	Ro Vision	Nordskag	1 h 17 min
07 Feb 2024	Froy Odin	Nordskag	12 h 23 min
17 Jan 2024	Froy Odin	Rataren	4 h 45 min
16 Jan 2024	Froy Odin	Rataren	2 h 35 min
16 Jan 2024	Froy Odin	Rataren	5 h 32 min
15 Jan 2024	Froy Odin	Rataren	9 h 49 min
11 Jan 2024	Froy Odin	Nordskag	21 h 58 min
10 Jan 2024	Froy Odin	Nordskag	16 h 42 min

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

Licences

Site MAB: unknown

No licences linked to this site in the aquaculture register.

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