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Björnsjön

northern acidified forest lake · 64°N
Real lakereal shoreline8 species on recordsources & method
clarity 6.5 mmax depth 9 mpH 5.3oligotrophicstatus unsatisfactorygravel road

Character of the water

Björnsjön lies in the cold north — a northern acidified forest lake. The water is crystal-clear and the fish skittish in the sharp light. In summer a thermocline settles around 5 m and splits the lake into two worlds. Acidification has thinned life down to the hardiest few.

The surroundings

The lake lies half-remote, a fair way from the nearest road, tucked into woodland.

Moderately deep (9 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Björnsjön FVOF. Day permit ~60 kr · annual permit ~300 kr.

  • Pike: keep at most one over 75 cm per day.
  • Trout & Arctic char: protected during the autumn spawn · catch-and-release on certain stretches.
  • Handheld tackle only. Respect the protected zones at the inlets and outlets.

Species in Björnsjön

perch predatory fish
typically ~22 cm · can reach 45 cm
Here perch lives on the small stuff — and rewards those who fish small and fine.
ål fish
typically ~55 cm · can reach 110 cm
Ål lives down in the cool — the deep is its home ground all year.
pike predatory fish
typically ~62 cm · can reach 120 cm
Pike is a sight-hunter here — the clear water means long follows before the take.
havsoring-baltic fish
typically ~25 cm · can reach 50 cm
Here havsoring-baltic lives on the small stuff — and rewards those who fish small and fine.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Burbot lives down in the cool — the deep is its home ground all year.
roach coarse fish
typically ~18 cm · can reach 32 cm
Here roach lives on the small stuff — and rewards those who fish small and fine.
trout salmonids
typically ~35 cm · can reach 70 cm
Trout is a sight-hunter here — the clear water means long follows before the take.
vendace whitefish
typically ~16 cm · can reach 28 cm
Vendace holds in the open water column where light and temperature set the day.

Fishing Björnsjön

perch, pike and burbot sit at the top of the food chain in Björnsjön, carried by ål, havsoring-baltic and roach. The clearer water makes the fish wary — and rewards a careful presentation.

Whoever fishes Björnsjön regularly builds something of their own: a log of what took, where and when. That's how the water gives up its patterns — cast by cast, never all at once.

General rules of thumb for this kind of water

  • Clear water makes fish light-shy — dawn, dusk and night are usually best.
  • Acidified water yields few, hardy species.

The catch board

6 anglers · 12 catches
  1. 1Ida Vogelål50 cm
  2. 2Emil Boströmburbot40 cm
  3. 3Hanna Strandtrout31 cm
  4. 4Ole Webertrout29 cm
  5. 5Nils Erikssontrout28 cm
  6. 6Stefan Ekhavsoring-baltic22 cm
Species records here
ål50 cmIda Vogel
burbot40 cmEmil Boström
trout29 cmOle Weber
havsoring-baltic22 cmStefan Ek
The same water, for real