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Tannsjön

nutrient-rich lowland lake · 60°N
Real lakereal shorelinemeasured max depth 30 m7 species on recordreal water chemistrysources & method →
clarity 2.3 mmax depth 30 mpH 5.9eutrophicstatus poorgravel road
Fish Tannsjön Buy forecast

Character of the water

Tannsjön lies in central Sweden — a nutrient-rich lowland lake.

The surroundings

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

Large and deep (30 m): a central basin ringed by drop-offs and shallow bays around the edges — varied bottom with many spots to read.

Permits & rules

Fishing permit required — Tannsjön 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 Tannsjön

perch predatory fish
typically ~22 cm · can reach 45 cm
Perch grazes the rich water in schools — where there's one, there are more.
pike predatory fish
typically ~62 cm · can reach 120 cm
In the murky light, pike shadows the baitfish and hits in short rushes.
ruffe perch family
typically ~12 cm · can reach 22 cm
Down on the bottom ruffe sifts the soft ground — patience beats speed here.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach grazes the rich water in schools — where there's one, there are more.
trout salmonids
typically ~35 cm · can reach 70 cm
In the murky light, trout shadows the baitfish and hits in short rushes.
whitefish whitefish
typically ~30 cm · can reach 55 cm
Whitefish follows the schools through open water — here today, gone tomorrow.
vendace whitefish
typically ~16 cm · can reach 28 cm
Vendace roams the open water after the feed — a moving target.

Fishing Tannsjön

perch, pike and trout sit at the top of the food chain in Tannsjön, carried by ruffe, roach and whitefish. The nutrient-rich water means plenty of baitfish — and predators that grow fat on them.

Every session at Tannsjön 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

  • In deep, oxygenated lakes the predators seek cool depth in summer, shallower in spring and autumn.
  • Nutrient-rich lakes hold plenty of baitfish but often murky water.

The catch board

6 anglers · 12 catches
  1. 1Roland Lundperch18 cm
  2. 2Eva Viklundroach16 cm
  3. 3Maria Lundroach15 cm
  4. 4Roland Olofssonvendace15 cm
  5. 5Erik Viklundruffe10 cm
  6. 6Ole Forsbergruffe9 cm
Species records here
perch18 cmRoland Lund
roach16 cmEva Viklund
vendace15 cmRoland Olofsson
ruffe10 cmErik Viklund
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