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Mörttjärnen

acidified brown forest lake · 61°N
Real lakereal shoreline17 species on recordsources & method
clarity 1.6 mmax depth 5 mpH 5.4oligotrophic · humicstatus unsatisfactorypaved road

Character of the water

Mörttjärnen lies in central Sweden — a acidified brown forest lake. The tea-stained, humic water hides the bottom within an arm's length. Acidification has thinned life down to the hardiest few.

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.

Moderately deep (5 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Mörttjärnen FVOF. Day permit ~100 kr · annual permit ~500 kr.

  • Zander: minimum size 45 cm · protected during the spawn (Apr–May).
  • 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 Mörttjärnen

perch predatory fish
typically ~22 cm · can reach 45 cm
Perch grazes the rich water in schools — where there's one, there are more.
björkna fish
typically ~18 cm · can reach 35 cm
Down on the bottom björkna sifts the soft ground — patience beats speed here.
bream coarse fish
typically ~38 cm · can reach 65 cm
Down on the bottom bream sifts the soft ground — patience beats speed here.
elritsa fish
typically ~7 cm · can reach 12 cm
The nutrient-rich water keeps elritsa moving constantly between the feeding grounds.
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.
zander predatory fish
typically ~50 cm · can reach 95 cm
In the murky light, zander shadows the baitfish and hits in short rushes.
grayling fish
typically ~30 cm · can reach 50 cm
Grayling grazes the rich water in schools — where there's one, there are more.
id fish
typically ~38 cm · can reach 75 cm
Id grazes the rich water in schools — where there's one, there are more.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Burbot works the bottom in the dark — smell and feel come before everything else.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach grazes the rich water in schools — where there's one, there are more.
nors fish
typically ~12 cm · can reach 22 cm
Nors roams the open water after the feed — a moving target.
trout salmonids
typically ~35 cm · can reach 70 cm
In the murky light, trout shadows the baitfish and hits in short rushes.
Arctic char salmonids
typically ~35 cm · can reach 70 cm
In the murky light, Arctic char shadows the baitfish and hits in short rushes.
ruda fish
typically ~18 cm · can reach 42 cm
Down on the bottom ruda sifts the soft ground — patience beats speed here.
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 Mörttjärnen

The species list of Mörttjärnen runs to 17. 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.

Whoever fishes Mörttjärnen 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

  • Brown, humic water dampens the light — fishing can be good even in the middle of the day.
  • Acidified water yields few, hardy species.

The catch board

6 anglers · 12 catches
  1. 1Mikko Forsbergpike50 cm
  2. 2Kjell Sjöbergbjörkna15 cm
  3. 3Elin Hedlundroach14 cm
  4. 4Heike Boströmruffe10 cm
  5. 5Linnea Häggruffe10 cm
  6. 6Bjørn Boströmelritsa6 cm
Species records here
pike50 cmMikko Forsberg
björkna15 cmKjell Sjöberg
roach14 cmElin Hedlund
ruffe10 cmHeike Boström
elritsa6 cmBjørn Boström
The same water, for real