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Koasjön

southern nutrient-rich lowland lake · 57°N
Real lakereal shorelinesources & method →
clarity 2.3 mmax depth 4 mpH 7.4eutrophicstatus unsatisfactorypaved road
Fish Koasjön Buy forecast

Character of the water

Koasjön lies in the south — a southern nutrient-rich lowland lake.

The surroundings

The lake sits close to town with a road right up to it — easy to reach, but hard-fished and exposed to nutrient runoff from the buildings and fields all around.

Shallow throughout (max 4 m), with reeds and vegetation over large areas — water that warms fast in spring.

Permits & rules

Fishing permit required — Koasjön 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 Koasjön

perch predatory fish
typically ~22 cm · can reach 45 cm
The nutrient-rich water keeps perch moving constantly between the feeding grounds.
pike predatory fish
typically ~62 cm · can reach 120 cm
Pike hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
roach coarse fish
typically ~18 cm · can reach 32 cm
The nutrient-rich water keeps roach moving constantly between the feeding grounds.
zander predatory fish
typically ~50 cm · can reach 95 cm
Zander hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
bream coarse fish
typically ~38 cm · can reach 65 cm
Bream works the bottom in the dark — smell and feel come before everything else.
ruffe perch family
typically ~12 cm · can reach 22 cm
Ruffe works the bottom in the dark — smell and feel come before everything else.

Fishing Koasjön

The species list of Koasjön runs to 6. The predators — perch, pike and zander — hunt where the baitfish gather, and on a water this size you soon learn where it holds its fish.

Every session at Koasjön is fished in whatever conditions hold right then — the same pressure, wind and light as over the real water. What bites today isn't what bit the day before, and those who return learn the water for real.

General rules of thumb for this kind of water

  • Nutrient-rich lakes hold plenty of baitfish but often murky water.

The catch board

6 anglers · 12 catches
  1. 1Hanna Lindqvistpike50 cm
  2. 2Björn Falkzander40 cm
  3. 3Roland Krügerbream30 cm
  4. 4Petra Månssonroach14 cm
  5. 5Erik Sandströmruffe11 cm
  6. 6Maria Åbergruffe11 cm
Species records here
pike50 cmHanna Lindqvist
zander40 cmBjörn Falk
bream30 cmRoland Krüger
roach14 cmPetra Månsson
ruffe11 cmErik Sandström
The same water, for real
This water's real catch reports — and the logbook for your own.Fångstrapport.sein SwedishThe real bite table for this water — for your next real session.Huggtabell.sein Swedish