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The Salmon Ledger
NOEN

Mjønes

Site 36257 · Karlsøy municipality · Production area 11, Kvaløya til Loppa

Below the lice limit, week 39Operated by Lerøy Aurora Sjø AS · group Lerøy Seafood Group
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0.01Adult 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 7 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
1Lice treatments in 2026Latest: Medicinal feed, week 38, 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
7Wellboat visits in 2026by 1 vessel · latest 21 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
2Escapes reported0 salmon, September 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 21–26 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
WeekAdult female lice per fishLice limitStatus
1unknown0.5Not reported
2unknown0.5Not reported
3unknown0.5Not reported
4unknown0.5Not reported
5unknown0.5Not reported
6unknown0.5Not reported
7unknown0.5Not reported
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
14unknown0.5Not reported
15unknown0.5Not reported
16unknown0.5Not reported
17unknown0.5Not reported
18unknown0.5Not reported
19unknown0.5Not reported
20unknown0.5Not reported
21unknown0.2Not reported
22unknown0.2Not reported
23unknown0.2Not reported
24unknown0.2Not reported
25unknown0.2Not reported
26unknown0.2Not reported
27unknown0.5Not reported
28unknown0.5Not reported
29unknown0.5Not reported
30unknown0.5Not reported
31unknown0.5Not reported
32unknown0.5Not reported
330.000.5Below the limit
340.000.5Below the limit
350.000.5Below the limit
360.010.5Below the limit
370.050.5Below the limit
380.020.5Below the limit
390.010.5Below the limit

Earlier years

20250 of 39 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
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
10.340.5Below the limit
20.390.5Below the limit
30.430.5Near the limit
40.170.5Below the limit
50.070.5Below the limit
60.090.5Below the limit
70.090.5Below the limit
80.100.5Below the limit
90.100.5Below the limit
100.100.5Below the limit
110.090.5Below the limit
120.080.5Below the limit
130.090.5Below the limit
140.100.5Below the limit
150.090.5Below the limit
160.080.5Below the limit
170.090.5Below the limit
180.090.5Below the limit
190.090.5Below the limit
200.100.5Below the limit
210.100.2Below the limit
220.110.2Below the limit
230.140.2Below the limit
240.150.2Below the limit
250.150.2Below the limit
260.160.2Near the limit
270.080.5Below the limit
280.020.5Below the limit
290.030.5Below the limit
300.040.5Below the limit
310.090.5Below the limit
320.340.5Below the limit
330.320.5Below the limit
340.340.5Below the limit
350.350.5Below the limit
360.340.5Below the limit
370.390.5Below the limit
380.380.5Below the limit
390.4950.5Near the limit
40unknown0.5Reported without a count
41unknown0.5Reported without a count
42unknown0.5Reported without a count
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
47unknown0.5Not reported
48unknown0.5Not reported
49unknown0.5Not reported
50unknown0.5Not reported
51unknown0.5Not reported
52unknown0.5Not reported
20240 of 27 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
Show as table
Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
10.340.5Below the limit
20.370.5Below the limit
30.340.5Below the limit
40.350.5Below the limit
50.300.5Below the limit
60.330.5Below the limit
70.310.5Below the limit
80.270.5Below the limit
90.090.5Below the limit
10unknown0.5Reported without a count
11unknown0.5Reported without a count
12unknown0.5Not reported
13unknown0.5Not reported
14unknown0.5Not reported
15unknown0.5Not reported
16unknown0.5Not reported
17unknown0.5Not reported
18unknown0.5Not reported
19unknown0.5Not reported
20unknown0.5Not reported
21unknown0.2Not reported
22unknown0.2Not reported
23unknown0.2Not reported
24unknown0.2Not reported
25unknown0.2Not reported
26unknown0.2Not reported
27unknown0.5Not reported
28unknown0.5Not reported
29unknown0.5Not reported
30unknown0.5Not reported
31unknown0.5Not reported
32unknown0.5Not reported
33unknown0.5Not reported
34unknown0.5Not reported
350.000.5Below the limit
360.000.5Below the limit
370.020.5Below the limit
380.070.5Below the limit
390.020.5Below the limit
400.030.5Below the limit
410.040.5Below the limit
420.050.5Below the limit
430.100.5Below the limit
440.150.5Below the limit
450.210.5Below the limit
460.220.5Below the limit
470.210.5Below the limit
480.210.5Below the limit
490.200.5Below the limit
500.240.5Below the limit
510.250.5Below the limit
520.280.5Below the limit
20230 of 4 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
Show as table
Adult female lice per fish per week, 2023
WeekAdult female lice per fishLice limitStatus
40unknown0.5Not reported
41unknown0.5Not reported
42unknown0.5Not reported
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
47unknown0.5Not reported
48unknown0.5Not reported
490.310.5Below the limit
500.360.5Below the limit
510.340.5Below the limit
520.370.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 38, 2026
    Medicinal feedWhole site · Emamectin benzoat
  • Week 38, 2025
    Mechanical delousing2 pens
  • Week 33, 2025
    Other treatment5 pens · Kombi - Termisk med Optiflush
  • Week 27, 2025
    Other treatment9 pens · Kombi - Termisk med Optiflush
Show all 8
  • Week 5, 2025
    Other treatment1 pen · Kombi - Ferskvann og Termisk
  • Week 4, 2025
    Other treatment9 pens · Kombi - Ferskvann og Termisk
  • Week 40, 2024
    Medicinal feedWhole site · Emamectin benzoat
  • Week 49, 2023
    Medicinal bath3 pens · Azamethiphos

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
  • 09 Sep 2025
    0 salmon escapedCause: Ukjent. Årsaksanalyse startet. Mistenker ikke rømming. · Directorate of Fisheries
  • 09 Sep 2024
    1 salmon escapedCause: Mjønes Merd 6. Dette skjedde under dødfiskopptak. Håv ble løftet om bord i båt. I håv var det levende fisk. Når denne skulle føres tilbake i merd, havnet 1 levende fisk på utsiden. Snittvekt ca. 150 gram. Lokalitet følger beredskap og setter ut gjenfangstgarn. · recaptured 1 · 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.

ArrivalVesselPrevious farm (14 days)Duration
21 Aug 2026Froey VikingGrøtnes N2 h 22 min
19 Aug 2026Froey VikingGrøtnes N2 h 29 min
17 Aug 2026Froey VikingGrøtnes N2 h 16 min
15 Aug 2026Froey VikingGrøtnes N1 h 29 min
15 Aug 2026Froey VikingGrøtnes N1 h 11 min
13 Aug 2026Froey VikingGrøtnes N3 h 41 min
11 Aug 2026Froey VikingGrøtnes N2 h 20 min
04 Oct 2025Ro MasterSkaret4 h 10 min
26 Sep 2025Ro MasterKlubben5 h 33 min
26 Sep 2025Ro SailorKlubben2 h 28 min
24 Sep 2025Ro MasterSkjervøy3 h 38 min
23 Sep 2025Ro MasterMollvika1 h 28 min
Show 35 older visits
ArrivalVesselPrevious farm (14 days)Duration
18 Sep 2025Ronja SkilsoySkaret7 h 41 min
18 Sep 2025ReisaSkjervøy7 h 50 min
17 Sep 2025ReisaSkjervøy1 h 37 min
07 Sep 2025Ro SailorKlubben2 h 16 min
05 Sep 2025Ronja SkilsoySkjervøy4 h 25 min
04 Sep 2025Ronja SkilsoySkaret6 h 56 min
29 Aug 2025Ro SpiritSkjervøy1 h 54 min
29 Aug 2025Ro SpiritHolmen3 h 5 min
22 Aug 2025Ronja SkilsoySkjervøy8 h 8 min
21 Aug 2025Ronja SkilsoyYtre Simanes5 h 43 min
16 Aug 2025Ro FortuneLubben38 h 22 min
15 Aug 2025Ro FortuneLubben14 h 19 min
01 Jul 2025Ro FortuneSkjervøy70 h 12 min
28 Jun 2025Ro FortuneSkjervøy2 h 16 min
22 Jun 2025Ronja SkilsoySkjervøy4 h 27 min
27 Jan 2025SeihavGlimbukta9 h 37 min
26 Jan 2025SeihavGlimbukta8 h 45 min
24 Jan 2025SeihavGlimbukta8 h 14 min
24 Jan 2025SeihavGlimbukta49 min
23 Jan 2025SeihavGlimbukta4 h 9 min
22 Jan 2025SeihavSolheim16 h 33 min
14 Sep 2024Ro SpiritLangeråa1 h 23 min
01 Sep 2024ReisaSkjervøy2 h 4 min
30 Aug 2024ReisaSkjervøy6 h 39 min
28 Aug 2024ReisaSkjervøy3 h 44 min
06 Mar 2024Ro MasterSkjervøy2 h 7 min
02 Mar 2024ReisaSkjervøy2 h 36 min
01 Mar 2024ReisaSkjervøy1 h 54 min
26 Feb 2024ReisaSkjervøy5 h 3 min
21 Feb 2024ReisaSkjervøy2 h 37 min
11 Feb 2024ReisaSkjervøy2 h 3 min
31 Jan 2024ReisaSkjervøy2 h 43 min
21 Jan 2024ReisaSkjervøy1 h 51 min
13 Jan 2024ReisaSkjervøy6 h 21 min
07 Jan 2024ReisaSkjervøy3 h 40 min

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

Licences

Site MAB: 10,200 tonnes
LicenceTypeCapacityHolder
T G 0010Kommersiell / matfiskSalmon, Rainbow trout, Trout984 tLerøy Aurora Sjø AS
T K 0002Kommersiell / matfiskSalmon, Rainbow trout, Trout984 tLerøy Aurora Sjø AS
T T 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout1,021 tLerøy Aurora Sjø AS
T T 0008Kommersiell / matfiskSalmon, Rainbow trout, Trout1,021 tLerøy Aurora Sjø AS
T T 0010Kommersiell / matfiskSalmon, Rainbow trout, Trout1,021 tLerøy Aurora Sjø AS
T T 0015Kommersiell / matfiskSalmon, Rainbow trout, Trout985 tLerøy Aurora Sjø AS

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