Salmo salar m. sebago
The Landlocked Salmon
The Silver King of Saimaa
The Landlocked Salmon (Salmo salar m. sebago) is a unique freshwater form of the Atlantic Salmon. Since the end of the last Ice Age roughly 10,000 years ago, it has been confined to Finland's great lake systems — cut off from the sea, it adapted to a life in freshwater.
In Finland it is called Järvilohi (Lake Salmon) and is primarily found in the Saimaa lake system, Europe's largest lake system. The Saimaa Landlocked Salmon is critically endangered — only a few hundred adult fish remain in the wild. It is under the strictest protection and is the subject of one of Finland's most ambitious conservation programmes.
Unlike sea-run Salmon, the Landlocked Salmon spends its entire life in freshwater. It grows in the open water of large lakes, chasing schools of small Whitefish, and ascends tributaries to spawn. Its fighting behaviour is similar to that of sea-run Salmon: explosive runs and spectacular leaps.
Seasonal Data
The Landlocked Salmon is a summer fish. The trolling season is concentrated in a few intense weeks — peaking in July.
Diet Spectrum
The Landlocked Salmon is a specialized fish predator. Its main prey is small Whitefish — it follows their schools through open water.
Growth by Age
The Landlocked Salmon grows fast and reaches impressive sizes. Specimens over 5 kg are regularly caught in Saimaa — the Finnish record exceeds 12 kg.
| Age (Years) | Length | Weight | Relative Size |
|---|---|---|---|
| 1 | 10 cm | 12 g | 11% |
| 2 | 22 cm | 120 g | 23% |
| 3 | 35 cm | 450 g | 37% |
| 4 | 48 cm | 1.2 kg | 51% |
| 5 | 58 cm | 2.2 kg | 61% |
| 6 | 65 cm | 3.2 kg | 68% |
| 7 | 72 cm | 4.5 kg | 76% |
| 8+ | 80 cm | 6.5 kg | 84% |
Habitat Requirements
Water Temperature
Follows the thermocline in the lake. In summer, holds at 5 — 15 m depth where the water is cooler.
Oxygen
High O₂ demand, comparable to sea-run Salmon. Avoids oxygen-depleted deep layers.
Prey Availability
Location is primarily determined by prey fish presence. Follows Whitefish schools through open water.
Open Water
Lives in open water (pelagic), rarely near shore. Trolling is the logical consequence.
Spawning Habitat
Migrates into tributaries with gravel bottoms to spawn. Dams are the main threat to the population.
Lake Size
Needs extensive open-water zones and connected river systems. Saimaa is the ideal.
Fishing Techniques for Landlocked Salmon
The Landlocked Salmon lives pelagically — in the open, deep water of large lakes. This makes trolling by far the most effective method. Slim crankbaits and spoons are trolled at 3 to 15 metres depth through the thermocline.
A sonar and depth gauge are indispensable: the Landlocked Salmon holds where its prey holds. Find the Whitefish schools and you'll find the Salmon. Experienced guides know the seasonal routes and can dramatically increase your chances.
Trolling
June — AugustSlim crankbaits at 5 — 15 m depth behind the boat. The standard method with the highest catch rate.
Vertical Jigging
May — SeptemberJigging with heavy lures over Whitefish schools. Effective at known gathering points.
Shore Fishing (Rapids)
May — JuneDuring the spawning run in the tributaries. Large crankbaits and spoons in the current. Heavily regulated.
Where to Catch Landlocked Salmon in Finland
The Landlocked Salmon only occurs in a few lake systems. Each of these waters has its own population with its own conservation status.
Saimaa Lake System
61.5°N, 28.5°EEurope's most important Landlocked Salmon water
The Saimaa system encompasses over 4,400 km² of water surface and hosts the most renowned Landlocked Salmon population. The Salmon migrate between Haukivesi, Pihlajavesi and the tributaries Heinävesi and Pielisjoki. Strictly regulated fishing with limited trolling permits.
Päijänne
61.6°N, 25.5°EFinland's second-largest lake
The deep, clear Päijänne hosts its own Landlocked Salmon population, supported by stocking programmes. Trolling is particularly productive here, as the lake's depth (up to 95 m) provides ideal temperature conditions.
Höytiäinen
62.7°N, 29.5°ERestored Landlocked Salmon water
Once decimated by water-level lowering, the population is being rebuilt through intensive stocking. The lake offers excellent conditions and less angling pressure than Saimaa.
Vuoksi System (Rapids)
61.2°N, 28.8°ESpawning grounds of the Saimaa Salmon
The rapids of the Vuoksi system are the natural spawning grounds. Here you can observe ascending Salmon in early summer and — with strictly limited permits — fish for them. Most sections are protected year-round.
Trolling Tip: Equipment
Reel: Spinning reel or baitcaster with reliable drag. At least 150 m of 0.30 mm line.
Lures: Slim, 7 — 12 cm crankbaits in Whitefish pattern (silver/blue). Rapala, Nils Master and Kuusamo are the Finnish classics.
Depth: Diving lips or downriggers for 5 — 15 m. A thermometer and sonar are essential.