Tveitnesvik

Site 12077 · Kvinnherad municipality · Production area 3, Karmøy til Sotra

Below the lice limit, week 39Operated by Sjøtroll Havbruk AS · group Lerøy Seafood Group

Broodstock site: the limit may differ from the general one.

0.23Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 26 weeks with a count · broodstock: limit may differCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

3Lice treatments in 2026Latest: Other treatment, 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

4Wellboat visits in 2026by 1 vessel · latest 25 Mar 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported64 rainbow trout, September 2018Since 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. Broodstock site: the limit may differ from the general one.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026Broodstock site: the limit may differ from the general one.

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	Reported without a count
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	0.01	0.2	Below the limit
22	0.01	0.5	Below the limit
23	0.01	0.5	Below the limit
24	0.06	0.5	Below the limit
25	0.03	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.02	0.5	Below the limit
28	0.06	0.5	Below the limit
29	0.07	0.5	Below the limit
30	0.11	0.5	Below the limit
31	0.25	0.5	Below the limit
32	0.47	0.5	Near the limit
33	0.19	0.5	Below the limit
34	0.11	0.5	Below the limit
35	0.11	0.5	Below the limit
36	0.15	0.5	Below the limit
37	0.11	0.5	Below the limit
38	0.75	0.5	Above the limit
39	0.23	0.5	Below the limit

Earlier years

202513 of 44 weeks with a count above the limit

Show as table

Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.34	0.5	Below the limit
2	0.20	0.5	Below the limit
3	0.17	0.5	Below the limit
4	0.34	0.5	Below the limit
5	0.31	0.5	Below the limit
6	0.25	0.5	Below the limit
7	0.21	0.5	Below the limit
8	0.21	0.5	Below the limit
9	0.01	0.5	Below the limit
10	0.04	0.5	Below the limit
11	0.07	0.5	Below the limit
12	0.08	0.5	Below the limit
13	0.23	0.5	Below the limit
14	0.07	0.5	Below the limit
15	0.01	0.5	Below the limit
16	0.07	0.2	Below the limit
17	0.08	0.2	Below the limit
18	0.19	0.2	Near the limit
19	0.05	0.2	Below the limit
20	0.10	0.2	Below the limit
21	0.18	0.2	Near the limit
22	0.21	0.5	Below the limit
23	0.13	0.5	Below the limit
24	1.10	0.5	Above the limit
25	1.35	0.5	Above the limit
26	0.30	0.5	Below the limit
27	0.50	0.5	Above the limit
28	0.60	0.5	Above the limit
29	0.95	0.5	Above the limit
30	0.80	0.5	Above the limit
31	0.20	0.5	Below the limit
32	0.40	0.5	Near the limit
33	0.80	0.5	Above the limit
34	1.00	0.5	Above the limit
35	0.70	0.5	Above the limit
36	0.10	0.5	Below the limit
37	0.40	0.5	Near the limit
38	0.50	0.5	Above the limit
39	0.10	0.5	Below the limit
40	0.70	0.5	Above the limit
41	3.45	0.5	Above the limit
42	1.35	0.5	Above the limit
43	0.00	0.5	Below the limit
44	0.40	0.5	Near the limit
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 37 weeks with a count above the limit

Show as table

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	Reported without a count
15	unknown	0.5	Reported without a count
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	0.04	0.2	Below the limit
22	0.02	0.5	Below the limit
23	0.01	0.5	Below the limit
24	0.04	0.5	Below the limit
25	0.01	0.5	Below the limit
26	0.01	0.5	Below the limit
27	0.06	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.05	0.5	Below the limit
30	0.03	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	0.01	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.02	0.5	Below the limit
37	0.02	0.5	Below the limit
38	0.01	0.5	Below the limit
39	0.04	0.5	Below the limit
40	0.01	0.5	Below the limit
41	0.06	0.5	Below the limit
42	0.03	0.5	Below the limit
43	0.09	0.5	Below the limit
44	0.06	0.5	Below the limit
45	0.24	0.5	Below the limit
46	0.31	0.5	Below the limit
47	0.49	0.5	Near the limit
48	0.04	0.5	Below the limit
49	0.05	0.5	Below the limit
50	0.04	0.5	Below the limit
51	0.12	0.5	Below the limit
52	0.20	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Thermal delousing, Other treatment7 pens · Salmoclean
Week 21, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 31, 2025
Thermal delousingWhole site
Week 26, 2025
Thermal delousingWhole site

Show all 14

Week 19, 2025
Thermal delousingWhole site
Week 13, 2025
Thermal delousing4 pens
Week 12, 2025
Thermal delousing1 pen
Week 9, 2025
Thermal delousing7 pens
Week 6, 2025
Thermal delousing4 pens
Week 5, 2025
Thermal delousing3 pens
Week 2, 2025
Thermal delousing1 pen
Week 1, 2025
Thermal delousing7 pens
Week 48, 2024
Thermal delousing7 pens
Week 28, 2024
Medicinal feedWhole site · Emamectin benzoat

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

10 Sep 2018
64 rainbow trout escapedCause: Håndtering · recaptured 1 · Directorate of Fisheries

Wellboat visits

4 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
25 Mar 2026	Mowi Star	Langevågen	1 h 1 min
24 Mar 2026	Mowi Star	Langevågen	6 h 5 min
23 Mar 2026	Mowi Star	Langevågen	8 h 46 min
22 Mar 2026	Mowi Star	Langevågen	8 h 32 min
13 Nov 2025	Mowi Star	Matløyso	3 h 12 min
12 Nov 2025	Mowi Star	Matløyso	3 h 25 min
05 Jun 2024	Neptun	Steinvik	2 h 23 min
06 Apr 2024	Mowi Star	Skipperdalsneset	38 min
05 Apr 2024	Mowi Star	Skipperdalsneset	52 min

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

Licences

Site MAB: 1,560 tonnes

Licence	Type	Capacity	Holder
H L 0022	Kommersiell / stamfiskRainbow trout	780 t	Sjøtroll Havbruk AS
H OR 0017	Kommersiell / stamfiskRainbow trout	780 t	Sjøtroll Havbruk AS

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