Litletveitholane

Site 13876 · Osterøy municipality · Production area 4, Nordhordland til Stadt

Status unknown: not reported in week 39Operated by Tombre Fiskeanlegg AS · group unknown

unknownAdult female lice per fishNo count in week 39. Latest: 0.08 in week 25, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 24 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

3Lice treatments in 2026Latest: Thermal delousing, week 13, 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

8Wellboat visits in 2026by 4 different vessels · latest 09 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 rainbow trout, February 2025Since 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	0.11	0.5	Below the limit
2	0.16	0.5	Below the limit
3	0.25	0.5	Below the limit
4	0.29	0.5	Below the limit
5	0.49	0.5	Near the limit
6	0.15	0.5	Below the limit
7	0.14	0.5	Below the limit
8	0.28	0.5	Below the limit
9	0.33	0.5	Below the limit
10	0.31	0.5	Below the limit
11	0.36	0.5	Below the limit
12	0.38	0.5	Below the limit
13	0.06	0.5	Below the limit
14	0.08	0.5	Below the limit
15	0.08	0.5	Below the limit
16	0.08	0.2	Below the limit
17	unknown	0.2	Not reported
18	0.06	0.2	Below the limit
19	0.07	0.2	Below the limit
20	0.04	0.2	Below the limit
21	0.08	0.2	Below the limit
22	0.11	0.5	Below the limit
23	0.03	0.5	Below the limit
24	0.07	0.5	Below the limit
25	0.08	0.5	Below the limit
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

Earlier years

20250 of 52 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	0.02	0.5	Below the limit
2	0.19	0.5	Below the limit
3	0.38	0.5	Below the limit
4	0.05	0.5	Below the limit
5	0.10	0.5	Below the limit
6	0.21	0.5	Below the limit
7	0.38	0.5	Below the limit
8	0.28	0.5	Below the limit
9	0.23	0.5	Below the limit
10	0.34	0.5	Below the limit
11	0.07	0.5	Below the limit
12	0.08	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.10	0.5	Below the limit
15	0.11	0.5	Below the limit
16	0.09	0.2	Below the limit
17	0.07	0.2	Below the limit
18	0.07	0.2	Below the limit
19	0.12	0.2	Below the limit
20	0.10	0.2	Below the limit
21	0.02	0.2	Below the limit
22	0.03	0.5	Below the limit
23	0.04	0.5	Below the limit
24	0.04	0.5	Below the limit
25	0.02	0.5	Below the limit
26	0.02	0.5	Below the limit
27	0.04	0.5	Below the limit
28	0.02	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.02	0.5	Below the limit
31	0.02	0.5	Below the limit
32	0.02	0.5	Below the limit
33	0.03	0.5	Below the limit
34	0.08	0.5	Below the limit
35	0.09	0.5	Below the limit
36	0.05	0.5	Below the limit
37	0.13	0.5	Below the limit
38	0.10	0.5	Below the limit
39	0.24	0.5	Below the limit
40	0.17	0.5	Below the limit
41	0.11	0.5	Below the limit
42	0.13	0.5	Below the limit
43	0.29	0.5	Below the limit
44	0.32	0.5	Below the limit
45	0.08	0.5	Below the limit
46	0.02	0.5	Below the limit
47	0.04	0.5	Below the limit
48	0.11	0.5	Below the limit
49	0.31	0.5	Below the limit
50	0.46	0.5	Near the limit
51	0.25	0.5	Below the limit
52	0.11	0.5	Below the limit

20240 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, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.14	0.5	Below the limit
2	0.25	0.5	Below the limit
3	0.43	0.5	Near the limit
4	0.20	0.5	Below the limit
5	0.10	0.5	Below the limit
6	0.30	0.5	Below the limit
7	0.21	0.5	Below the limit
8	0.27	0.5	Below the limit
9	0.40	0.5	Near the limit
10	0.38	0.5	Below the limit
11	0.32	0.5	Below the limit
12	0.25	0.5	Below the limit
13	0.03	0.5	Below the limit
14	0.05	0.5	Below the limit
15	0.10	0.5	Below the limit
16	0.03	0.2	Below the limit
17	0.05	0.2	Below the limit
18	0.02	0.2	Below the limit
19	0.11	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.00	0.2	Below the limit
22	0.02	0.5	Below the limit
23	0.10	0.5	Below the limit
24	0.03	0.5	Below the limit
25	0.05	0.5	Below the limit
26	0.02	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.02	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
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	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.07	0.5	Below the limit

20230 of 12 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	0.10	0.5	Below the limit
41	0.17	0.5	Below the limit
42	0.21	0.5	Below the limit
43	unknown	0.5	Not reported
44	0.23	0.5	Below the limit
45	0.18	0.5	Below the limit
46	0.17	0.5	Below the limit
47	0.14	0.5	Below the limit
48	0.19	0.5	Below the limit
49	0.37	0.5	Below the limit
50	0.11	0.5	Below the limit
51	0.10	0.5	Below the limit
52	0.12	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 13, 2026
Thermal delousing3 pens
Week 11, 2026
Thermal delousing1 pen
Week 6, 2026
Thermal delousingWhole site
Week 51, 2025
Thermal delousingWhole site

Show all 14

Week 45, 2025
Thermal delousingWhole site
Week 38, 2025
Thermal delousing3 pens
Week 21, 2025
Thermal delousing2 pens
Week 11, 2025
Thermal delousingWhole site
Week 4, 2025
Thermal delousingWhole site
Week 13, 2024
Thermal delousingWhole site
Week 4, 2024
Thermal delousing3 pens
Week 50, 2023
Thermal delousingWhole site
Week 46, 2023
Thermal delousing1 pen
Week 44, 2023
Thermal delousing3 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

03 Feb 2025
1-10 rainbow trout escapedrecaptured 1 · Directorate of Fisheries

Wellboat visits

8 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
09 Jul 2026	Rostein	Nesevågen	1 h 50 min
08 Jul 2026	Rostein	Hesteneset	4 h 12 min
27 Jun 2026	Rostein	Øklandsvågen	1 h 22 min
24 Jun 2026	Rostein	Helgøy	1 h 28 min
03 Jun 2026	Ro Server	Seljeset	2 h 45 min
24 Mar 2026	Ro Fjell	Søreide	6 h 55 min
23 Mar 2026	Ro Fjell	Søreide	14 h 38 min
20 Mar 2026	Ro Spirit	Høyvika	1 h 46 min
23 Nov 2025	Namsos	Nygård	1 h 31 min
02 Oct 2025	Langsund	Porsvika	56 min
29 Mar 2025	Mowi Star	Ramsøy S	5 h 12 min
26 Mar 2025	Seifjell	Lingaholmane	3 h 57 min

Show 3 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
15 Mar 2025	Ro Fjell	Djupevik	10 h 36 min
23 Jan 2025	Ro Fjell	Gnarnesvika disease or zone there	10 h 24 min
05 Nov 2024	Seifjell	Toska S	3 h 1 min

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

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Fjord Drift AS	Week 40, 2023	Week 40, 2023
Sandnes Fiskeoppdrett AS	Week 41, 2023	Week 49, 2023
Tombre Fiskeanlegg AS	Week 50, 2023	Week 25, 2026

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 1,560 tonnes

Licence	Type	Capacity	Holder
H FE 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	922 t	Tombre Fiskeanlegg AS
H FS 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	823 t	Tombre Fiskeanlegg AS
H KM 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	876 t	Tombre Fiskeanlegg AS
H OR 0025	Kommersiell / matfiskSalmon, Rainbow trout, Trout	928 t	Tombre Fiskeanlegg AS
SF FL 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Sandnes Fiskeoppdrett AS
SF FL 0016	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Sandnes Fiskeoppdrett AS

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