Ecology of Salmo salar
Main Ref. Muus, B.J. and P. Dahlström, 1974
Remarks Juveniles feed mainly on aquatic insects and crustaceans. At sea the Atlantic salmon is pelagic, usually found feeding near the surface (Ref. 59043) preying on fish and crustaceans (Ref. 35387). May make long distance feeding migrations while at sea (e.g. individuals from European rivers may migrate to rich feeding grounds around the Faeroes Islands and in western Greenland (Ref. 58137)). Adults do not feed in freshwater during the spawning and post-spawning migrations (Refs. 30578, 51442, 59043). Preyed upon by American mergansers, kingfishers, harbor seals, grey seals, sharks, pollock and tuna.

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Salmo salar may be found.


Substrate Ref.
Special habitats
Special habitats Ref.


Associated with
Association remarks Parasites found are 2 protozoans, 1 myxosporidians, 2 monogeneids, 13 trematodes, 6 cestodes, 5 nematodes, 4 acanthocephalans, 1 leech, glochidia, Argulus (sea louse) and 2 copepods.


Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Muus, B.J. and P. Dahlström, 1974
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Muus, B.J. and P. Dahlström, 1974
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 4.50 0.26 4.54 0.06 Troph of juv./adults from 7 studies.
From individual food items 3.86 0.81 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Bowman, R.E., C.E. Stillwell, W.L. Michaels and M.D. Grosslein, 2000
(e.g. 346)
(e.g. cnidaria)
Entered by Froese, Rainer on 05.14.92
Modified by Opitz, Silvia on 02.24.12
Checked by Miranda, Lilibeth on 05.10.01
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