Kosjön
mesotrophic lake · 60°N
clarity 4.8 mmax depth 5 mpH 7.0mesotrophicstatus goodgravel road
Character of the water
Kosjön lies in central Sweden — a mesotrophic lake.
The surroundings
The lake lies half-remote, a fair way from the nearest road, tucked into woodland.
Moderately deep (5 m) — shallow bays, the odd reef and a deeper channel through the middle.
Permits & rules
Fishing permit required — Kosjön FVOF. Day permit ~60 kr · annual permit ~300 kr.
- Zander: minimum size 45 cm · protected during the spawn (Apr–May).
- Pike: keep at most one over 75 cm per day.
- Handheld tackle only. Respect the protected zones at the inlets and outlets.
Species in Kosjön
perch predatory fish
typically ~22 cm · can reach 45 cm
Perch moves carefully in the clear water — small mouthfuls, many of them.
pike predatory fish
typically ~62 cm · can reach 120 cm
In the clear water pike picks its moments — wary, but relentless once committed.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach moves carefully in the clear water — small mouthfuls, many of them.
zander predatory fish
typically ~50 cm · can reach 95 cm
In the clear water zander picks its moments — wary, but relentless once committed.
Fishing Kosjön
perch, pike and zander sit at the top of the food chain in Kosjön, carried by roach. The clearer water makes the fish wary — and rewards a careful presentation.
Whoever fishes Kosjön 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.
The catch board
- 1Ida Boströmpike51 cm
- 2Axel Raskpike50 cm
- 3Jukka Sandströmzander41 cm
- 4Lars Weberzander41 cm
- 5Kjell Krügerperch18 cm
- 6Linnea Björkroach15 cm
Species records here
pike50 cmAxel Rask
zander41 cmJukka Sandström
perch18 cmKjell Krüger
roach15 cmLinnea Björk
The same water, for real
