Groptjärnen
nutrient-rich lowland lake · 60°N
clarity 1.3 mmax depth 2 mpH 7.4eutrophicstatus poorforest track · 22 min for the last stretch
Character of the water
Groptjärnen 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.
Shallow throughout (max 2 m), with reeds and vegetation over large areas — water that warms fast in spring.
Permits & rules
Fishing permit required — Groptjärnen FVOF. Day permit ~140 kr · annual permit ~700 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 Groptjärnen
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.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach grazes the rich water in schools — where there's one, there are more.
zander predatory fish
typically ~50 cm · can reach 95 cm
In the murky light, zander shadows the baitfish and hits in short rushes.
bream coarse fish
typically ~38 cm · can reach 65 cm
Down on the bottom bream sifts the soft ground — patience beats speed here.
ruffe perch family
typically ~12 cm · can reach 22 cm
Down on the bottom ruffe sifts the soft ground — patience beats speed here.
Fishing Groptjärnen
The species list of Groptjärnen 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.
The fishing here follows the water's own rhythm: dawn and dusk have their windows, fronts close and open them, and the season moves the fish. No two sessions at Groptjärnen are alike.
General rules of thumb for this kind of water
- Nutrient-rich lakes hold plenty of baitfish but often murky water.
The catch board
- 1Jonas Wikströmzander43 cm
- 2Per Häggperch23 cm
- 3Petra Ekperch20 cm
- 4Eva Nyströmperch18 cm
- 5Magnus Raskroach14 cm
- 6Klaus Olofssonruffe10 cm
Species records here
zander43 cmJonas Wikström
perch18 cmEva Nyström
roach14 cmMagnus Rask
ruffe10 cmKlaus Olofsson
The same water, for real
