Rankings · 2024–2026

Who is most often above the lice limit?

Companies and groups ranked by how many weeks their farms reported sea lice counts at or above the legal limit. The share shows those weeks as a part of all counted weeks, so large and small companies can be compared. Select a column to sort.

Average across all commercial food-fish farms in 2025: 3.1% of counted weeks above the limit. 2026 is not over: the figures cover weeks 1–40 and change every week.

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YearProduction area

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Showing 100 groups and companies, 2025, all 13 areas.

Showing 100 groups and companies, 2025, all 13 areas.
#
1	Lerøy Seafood Group 4 companies	91	3,045	190	6.2%	0.20	1,247	14,985
2	Mowi 2 companies	137	4,609	166	3.6%	0.19	986	26,808
3	SalMar 2 companies	109	4,025	99	2.5%	0.17	2,240	22
4	Seashore Sjø AS company with no known group	20	502	36	7.2%	0.24	89	1
5	Cermaq 2 companies	61	1,928	27	1.4%	0.09	328	121
6	Bolaks 2 companies	14	414	18	4.3%	0.20	114	0
6	Isqueen AS company with no known group	6	232	18	7.8%	0.30	19	unknown (1 escapes with no count given)
6	Måsøval 3 companies	29	616	18	2.9%	0.20	136	1
9	Firda 1 company	10	316	15	4.7%	0.32	109	0
10	Kleiva Fiskefarm AS company with no known group	6	202	14	6.9%	0.19	20	22
10	Nova Sea Havbruk AS company with no known group	23	855	14	1.6%	0.14	163	6
12	Sinkaberg Havbruk AS company with no known group	15	447	13	2.9%	0.17	133	0
13	Flakstadvåg Laks AS company with no known group	5	183	12	6.6%	0.18	23	0
14	Gratanglaks AS company with no known group	4	152	11	7.2%	0.25	16	2
14	Kobbvåglaks AS company with no known group	3	103	11	10.7%	0.29	15	0
14	Salmo Innovation AS company with no known group	3	92	11	12.0%	0.26	17	0
17	Erko Seafood AS company with no known group	11	226	10	4.4%	0.22	48	0
18	Engesund Fiskeoppdrett AS company with no known group	11	243	9	3.7%	0.20	9	0
18	Kvarøy Fiskeoppdrett A/s company with no known group	7	271	9	3.3%	0.15	28	1
18	Lovundlaks Sjø AS company with no known group	7	242	9	3.7%	0.21	52	unknown (1 escapes with no count given)
18	Nordlaks 1 company	32	881	9	1.0%	0.13	93	unknown (1 escapes with no count given)
18	Rogaland Fjordbruk AS company with no known group	9	206	9	4.4%	0.25	26	0
23	Bjørøya AS company with no known group	9	272	8	2.9%	0.20	52	0
23	Blue Revolution Centre AS company with no known group	2	61	8	13.1%	0.28	22	0
23	Nordsjø Fjordbruk AS company with no known group	21	427	8	1.9%	0.16	40	0
26	Blom Fiskeoppdrett AS company with no known group	11	309	7	2.3%	0.17	48	0
26	Lofoten Sjøprodukter AS company with no known group	5	214	7	3.3%	0.25	33	unknown (1 escapes with no count given)
26	Seløy Sjøfarm AS company with no known group	3	74	7	9.5%	0.21	24	0
26	Varde Fiskeoppdrett AS company with no known group	5	164	7	4.3%	0.26	31	10
26	Vestland Fylkeskommune company with no known group	7	171	7	4.1%	0.22	24	0
31	Eide Fjordbruk 1 company	15	354	6	1.7%	0.16	43	unknown (3 escapes with no count given)
31	Eidesvik Laks AS company with no known group	4	149	6	4.0%	0.22	5	0
31	Gildeskål Forskningsstasjon AS company with no known group	6	214	6	2.8%	0.20	65	0
31	Grieg Seafood 2 companies	16	315	6	1.9%	0.24	31	0
31	Salaks Produksjon AS company with no known group	6	210	6	2.9%	0.13	20	0
31	Sulefisk AS company with no known group	6	185	6	3.2%	0.20	25	0
37	Erviks Laks Og Ørret AS company with no known group	4	143	5	3.5%	0.26	25	0
37	Lingalaks AS company with no known group	10	335	5	1.5%	0.15	57	0
39	Ellingsen Seafood AS company with no known group	7	274	4	1.5%	0.12	18	0
39	Emilsen Havbruk AS company with no known group	6	202	4	2.0%	0.18	53	0
39	Holmøy Havbruk AS company with no known group	18	530	4	0.8%	0.16	32	0
42	Arnøy Laks AS company with no known group	3	116	3	2.6%	0.16	10	0
42	Fjelberg Fjordbruk AS company with no known group	8	70	3	4.3%	0.13	8	0
42	Langøylaks AS company with no known group	5	187	3	1.6%	0.18	44	0
42	Letsea AS company with no known group	2	103	3	2.9%	0.15	13	0
42	Prophylaxia AS company with no known group	3	111	3	2.7%	0.22	16	0
42	Sandnes Fiskeoppdrett AS company with no known group	5	84	3	3.6%	0.21	16	0
48	Austevoll Melaks AS company with no known group	2	81	2	2.5%	0.14	11	0
48	Ballangen Sjøfarm AS company with no known group	3	93	2	2.2%	0.07	6	0
48	Hellesund Fiskeoppdrett AS company with no known group	2	58	2	3.4%	0.16	4	0
48	Steinvik Fiskefarm AS company with no known group	8	176	2	1.1%	0.15	31	0
48	Telavåg Fiskeoppdrett AS company with no known group	4	92	2	2.2%	0.14	9	0
48	Wilsgård Farming AS company with no known group	4	127	2	1.6%	0.12	25	0
54	Fremskridt Laks AS company with no known group	3	59	1	1.7%	0.16	7	0
54	Hofseth Sea Farming AS company with no known group	5	203	1	0.5%	0.14	43	0
56	Akvafuture AS company with no known group	2	59	0	0.0%	0.01	0	0
56	AS Knutshaugfisk company with no known group	4	99	0	0.0%	0.11	1	0
56	E. Karstensen Fiskeoppdrett AS company with no known group	2	86	0	0.0%	0.07	8	0
56	Egil Kristoffersen & Sønner 1 company	5	106	0	0.0%	0.06	9	0
56	Flokenes Fiskefarm AS company with no known group	3	122	0	0.0%	0.15	9	0
56	Fylkesnes Fisk AS company with no known group	7	181	0	0.0%	0.15	25	0
56	Kobbevik Og Furuholmen Oppdrett AS company with no known group	5	148	0	0.0%	0.17	23	unknown (1 escapes with no count given)
56	Korshavn Havbruk AS company with no known group	2	88	0	0.0%	0.05	2	0
56	Landøy Fiskeoppdrett AS company with no known group	6	97	0	0.0%	0.16	14	0
56	Nordfjord Laks AS company with no known group	4	118	0	0.0%	0.09	22	0
56	Northern Lights Salmon AS company with no known group	4	182	0	0.0%	0.08	11	0
56	Organic Seafarm AS company with no known group	2	74	0	0.0%	0.23	6	0
56	Osland 2 companies	8	210	0	0.0%	0.17	54	0
56	Øyfisk AS company with no known group	5	153	0	0.0%	0.15	17	0
56	Quatro Laks AS company with no known group	4	92	0	0.0%	0.11	17	1
56	Sjurelv Fiskeoppdrett AS company with no known group	3	105	0	0.0%	0.14	2	0
56	Svanøy Havbruk AS company with no known group	3	94	0	0.0%	0.23	17	0
56	Tombre Fiskeanlegg AS company with no known group	7	222	0	0.0%	0.09	20	11
56	Wenberg Fiskeoppdrett AS company with no known group	4	136	0	0.0%	0.01	0	0
Fewer than 52 counted weeks: not ranked (too little data for a fair share)
–	Arctic Offshore Farming AS company with no known group	1	15	13	86.7%	0.70	0	0
–	Lingalaks Gruppen AS company with no known group	1	1	1	100.0%	2.90	0	0
–	Norsk Havbrukssenter AS company with no known group	1	23	1	4.3%	0.22	8	0
–	Akvakultur I Vesterålen AS company with no known group	1	42	0	0.0%	0.14	4	0
–	Aller Aqua Norway AS company with no known group	1	24	0	0.0%	0.15	3	0
–	Andfjord Salmon AS company with no known group	1	5	0	0.0%	0.00	0	0
–	Edelfarm AS company with no known group	2	26	0	0.0%	0.02	0	0
–	Ewos Innovation AS company with no known group	1	9	0	0.0%	0.13	0	0
–	Falk Og Magnar Vilnes ANS company with no known group	1	10	0	0.0%	0.08	2	0
–	Fjord Miljø AS company with no known group	1	0	0	unknown	unknown	0	0
–	Frøy Havbruk AS company with no known group	1	4	0	0.0%	0.22	4	0
–	Hardingsmolt AS company with no known group	1	36	0	0.0%	0.00	0	0
–	Landøy Havbruk AS company with no known group	2	27	0	0.0%	0.17	2	0
–	Marø Havbruk A/s company with no known group	3	43	0	0.0%	0.09	8	0
–	Mortenlaks AS company with no known group	2	34	0	0.0%	0.02	0	0
–	Nova Sea AS company with no known group	1	20	0	0.0%	0.09	0	0
–	Ocean Farming AS company with no known group	1	36	0	0.0%	0.09	0	0
–	Refsnes Laks AS company with no known group	3	37	0	0.0%	0.11	0	0
–	Røvær Fjordbruk AS company with no known group	0	0	0	unknown	unknown	0	15
–	Salten Stamfisk AS company with no known group	2	39	0	0.0%	0.01	0	0
–	Selsøyvik Havbruk AS company with no known group	1	29	0	0.0%	0.19	3	0
–	Sørvest Laks AS company with no known group	1	23	0	0.0%	0.03	0	0
–	Steinvik Fiskefarm Visningssenter AS company with no known group	2	6	0	0.0%	0.17	0	0
–	Troland Lakseoppdrett AS company with no known group	4	46	0	0.0%	0.12	3	0
–	Universitetet I Bergen company with no known group	1	42	0	0.0%	0.07	2	0
–	Viking Fjord AS company with no known group	0	0	0	unknown	unknown	0	8

Sources: Norwegian Food Safety Authority (lice counts, treatments, disease, updated 01 Oct 2026), Directorate of Fisheries (escapes, site register, updated 01 Oct 2026). The figures are the companies' own reports. Rankings start in 2024, the first full year with organisation numbers in the open data. Licence: CC BY 4.0.

The columns

Farms: Sites that filed at least one lice report in the year.
Counted weeks: Farm-weeks with a lice count. Weeks without a report count neither as above nor below.
Weeks over: Farm-weeks where the average of adult female lice was at or above the legal limit (0.2 or 0.5).
Share over: Weeks over divided by counted weeks. The fairest measure when companies differ in size.
Avg. lice: Average adult female lice per fish in the counted weeks.
Treatments: Reported lice treatments. A combined treatment counts once.
Escaped fish: Escaped fish according to the companies' own reports. “unknown” when an escape has no count.