Usholmsvika

Site 11533 · Øygarden municipality · Production area 3, Karmøy til Sotra

Status unknown: not reported in week 39Operated by Telavåg Fiskeoppdrett AS · group unknown

unknownAdult female lice per fishNo count in week 39. Latest: 0.20 in week 49, 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

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Wellboat visits in 2026Latest visit 06 Sep 2025Derived 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

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.08	0.5	Below the limit
2	0.05	0.5	Below the limit
3	0.12	0.5	Below the limit
4	0.25	0.5	Below the limit
5	0.18	0.5	Below the limit
6	0.30	0.5	Below the limit
7	0.35	0.5	Below the limit
8	0.40	0.5	Near the limit
9	0.42	0.5	Near the limit
10	0.45	0.5	Near the limit
11	0.00	0.5	Below the limit
12	0.00	0.5	Below the limit
13	0.00	0.5	Below the limit
14	0.06	0.5	Below the limit
15	0.03	0.5	Below the limit
16	0.03	0.2	Below the limit
17	0.04	0.2	Below the limit
18	0.03	0.2	Below the limit
19	0.12	0.2	Below the limit
20	0.17	0.2	Near the limit
21	0.15	0.2	Below the limit
22	0.07	0.5	Below the limit
23	0.03	0.5	Below the limit
24	0.02	0.5	Below the limit
25	0.02	0.5	Below the limit
26	0.03	0.5	Below the limit
27	0.07	0.5	Below the limit
28	0.10	0.5	Below the limit
29	0.02	0.5	Below the limit
30	0.25	0.5	Below the limit
31	0.27	0.5	Below the limit
32	0.32	0.5	Below the limit
33	0.38	0.5	Below the limit
34	0.42	0.5	Near the limit
35	0.38	0.5	Below the limit
36	0.10	0.5	Below the limit
37	0.00	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	0.03	0.5	Below the limit
42	0.03	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.20	0.5	Below the limit
47	0.27	0.5	Below the limit
48	0.13	0.5	Below the limit
49	0.20	0.5	Below the limit
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

Earlier years

20240 of 16 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	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	0.00	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	0.00	0.5	Below the limit
43	0.07	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.03	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.18	0.5	Below the limit
48	0.18	0.5	Below the limit
49	0.07	0.5	Below the limit
50	0.08	0.5	Below the limit
51	0.05	0.5	Below the limit
52	0.07	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 4, 2025
Medicinal feed3 pens · Emamectin benzoate
Week 3, 2025
Medicinal feed3 pens · Emamectin benzoate

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

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
06 Sep 2025	Robas	Mjåneset	1 h 10 min
31 Aug 2025	Hauglaks	Knappen	7 h 5 min
28 Aug 2025	Rostein	Kastevika	1 h 50 min
13 Mar 2025	Hordagut	Otterholmen	12 h 44 min
11 Nov 2024	Rostein	Bjørndal	2 h 27 min
08 Sep 2024	Mowi Star	Eikebærånæ	4 h 3 min
26 May 2024	Mowi Star	Guleskjeret	6 h 47 min
20 Jan 2024	Mowi Star	Mjåneset	7 h 38 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
Telavåg Fiskeoppdrett AS	Week 37, 2024	Week 49, 2025
Engesund Fiskeoppdrett AS	Week 6, 2025	Week 8, 2025
Troland Lakseoppdrett AS	Week 24, 2025	Week 35, 2025

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

Licences

Site MAB: 1,560 tonnes

Licence	Type	Capacity	Holder
H AV 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Austevoll Melaks AS
H AV 0025	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Troland Lakseoppdrett AS
H AV 0027	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Austevoll Melaks AS
H FJ 0026	Kommersiell / matfisk-grønn cSalmon, Rainbow trout, Trout	737 t	Engesund Fiskeoppdrett AS
H S 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Telavåg Fiskeoppdrett AS
H S 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Telavåg Fiskeoppdrett AS

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