Salmo salar
The Atlantic Salmon
The King of the Rivers
The Atlantic Salmon (Salmo salar) is the undisputed king of Finland's rivers. In Finland it is called Lohi and is regarded as the noblest and most coveted target fish of the North. Its anadromous life cycle — born in the river, raised in the Baltic, returning to spawn — is one of Europe's most impressive natural spectacles.
After two to four years at sea, where it feeds on Herring and Sprat and grows to over 10 kilograms, the Salmon returns to its birth river. The Tornionjoki on the Finnish-Swedish border is Europe's best and most productive wild Salmon river — every year tens of thousands of Salmon ascend here, including specimens exceeding 15 kilograms.
One of the most fascinating aspects of Salmon fishing: during the river ascent, the Salmon ceases all feeding. Its digestive tract degenerates. That it still strikes at flies and crankbaits is a pure aggression and bite reflex — an instinct from its juvenile days in the river. This is precisely what makes Salmon fishing so challenging and captivating.
Seasonal Data
Catch probability for Atlantic Salmon in Finnish rivers — the Salmon run concentrates in the summer months of June to September.
Diet Spectrum
Salmon feed exclusively in the sea. During the river ascent they cease all food intake — strikes are purely from aggression reflex.
Growth by Age
Atlantic Salmon grow as smolts in the river and reach their full size only after several years at sea. Returning fish can exceed 100 cm and 12 kg.
| Age (Years) | Length | Weight | Relative Size |
|---|---|---|---|
| 1 | 12 cm | 15 g | 10% |
| 2 | 20 cm | 80 g | 17% |
| 3 | 35 cm | 400 g | 29% |
| 4 | 55 cm | 1.8 kg | 46% |
| 5 | 70 cm | 3.5 kg | 58% |
| 6 | 80 cm | 5.5 kg | 67% |
| 8 | 90 cm | 8.0 kg | 75% |
| 10+ | 100 cm | 12.0 kg | 83% |
Habitat Requirements
Water Temperature
Salmon require cold, oxygen-rich water. Temperatures above 20 °C are life-threatening for Atlantic Salmon.
Current
Salmon need strong current for their ascent and spawning. Resting zones behind boulders serve as holding lies.
Oxygen
High oxygen content is essential. Cold, fast-flowing rivers provide ideal conditions for Salmon.
Spawning Substrate
Salmon dig redds in clean gravel. Grain size must allow flow-through for egg development.
Water Quality
Nutrient-poor, clear waters are ideal. Pollution and eutrophication destroy Salmon habitat permanently.
Migration Route
Salmon must migrate freely from the sea to the spawning grounds. Dams without fish ladders are the biggest obstacle.
Fishing Techniques for Salmon in Finland
Salmon fishing in Finland is inseparably linked with fly fishing. On the great Salmon rivers like the Tornionjoki, Simojoki and Teno, the classic two-handed rod is the weapon of choice. But crankbaits and trolling in the Baltic also produce outstanding catches.
Fly Fishing / Salmon Fly
Jun — AugThe pinnacle of Salmon fishing. Two-handed rod, Spey casts and classic Salmon flies on the great Salmon rivers. The most emotional way to catch a wild Salmon.
Crankbait / Wobbler
Jun — SepEffective method with floating and diving crankbaits. Especially successful at current seams and resting pools. Also well suited for beginners.
Trolling (Baltic Sea)
May — SepTrolling for Baltic Salmon off the Bothnian coast. Downriggers and crankbaits at 10-30 m depth. Chance of the largest specimens up to 15+ kg.
Where to Catch Salmon in Finland
The Atlantic Salmon is found in a few but legendary Finnish rivers and along the Baltic coast. These regions offer the best chances.
Tornionjoki
66.4°N, 23.8°EEurope's best Salmon river
The Tornionjoki is the longest free-flowing river in the Baltic region and Europe's most productive wild Salmon river. Over 100,000 Salmon ascend here every year. The season begins in mid-June and lasts until late August.
Simojoki
65.7°N, 25.8°EWild Salmon river
The Simojoki is a smaller, wild Salmon river in Lapland. Less well-known than the Tornionjoki, it offers a more authentic wilderness experience with less angling pressure.
Teno / Tana
70.1°N, 27.0°EBorder river to Norway
The Tenojoki (Tana) on the Finnish-Norwegian border is one of the most legendary Salmon rivers in the world. Europe's largest Atlantic Salmon ascend here. Fishing is strictly regulated and tied to special licences.
Bothnian Baltic Coast
63.5°N, 22.0°ETrolling for Baltic Salmon
The Bothnian coast between Vaasa and Oulu is the realm of trolling anglers. Baltic Salmon on their way to their spawning rivers are caught by trolling.
