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Költjärnen

clear oligotrophic forest lake · 61°N
Real lakereal shoreline10 species on recordsources & method
clarity 5.1 mmax depth 2 mpH 6.7oligotrophicstatus goodgravel road

Character of the water

Költjärnen lies in central Sweden — a clear oligotrophic forest lake. The water is crystal-clear and the fish skittish in the sharp light.

The surroundings

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

Shallow throughout (max 2 m), with reeds and vegetation over large areas — water that warms fast in spring.

Permits & rules

Fishing permit required — Költjärnen FVOF. Day permit ~140 kr · annual permit ~700 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 Költjärnen

perch predatory fish
typically ~22 cm · can reach 45 cm
Perch moves carefully in the clear water — small mouthfuls, many of them.
bream coarse fish
typically ~38 cm · can reach 65 cm
Bream lives down in the cool — the deep is its home ground all year.
pike predatory fish
typically ~62 cm · can reach 120 cm
In the clear water pike picks its moments — wary, but relentless once committed.
grayling fish
typically ~30 cm · can reach 50 cm
Grayling moves carefully in the clear water — small mouthfuls, many of them.
id fish
typically ~38 cm · can reach 75 cm
Id moves carefully in the clear water — small mouthfuls, many of them.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Burbot holds the bottom even in clear water — shade and depth are its cover.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach moves carefully in the clear water — small mouthfuls, many of them.
trout salmonids
typically ~35 cm · can reach 70 cm
In the clear water trout picks its moments — wary, but relentless once committed.
regnbåge fish
typically ~35 cm · can reach 70 cm
Regnbåge is a sight-hunter here — the clear water means long follows before the take.
Arctic char salmonids
typically ~35 cm · can reach 70 cm
In the clear water Arctic char picks its moments — wary, but relentless once committed.

Fishing Költjärnen

The species list of Költjärnen runs to 10. The predators — perch, pike and grayling — hunt where the baitfish gather, and on a water this size you soon learn where it holds its fish.

Whoever fishes Költjärnen 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.

The catch board

6 anglers · 12 catches
  1. 1Ole WeberArctic char34 cm
  2. 2Anders Blomid32 cm
  3. 3Elin Nieminentrout30 cm
  4. 4Linnea Nieminenregnbåge29 cm
  5. 5Stefan Ektrout29 cm
  6. 6Heike Wikströmroach15 cm
Species records here
Arctic char34 cmOle Weber
id32 cmAnders Blom
trout30 cmElin Nieminen
regnbåge29 cmLinnea Nieminen
roach15 cmHeike Wikström
The same water, for real