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Salmon are important food fish and are intensively farmed in many parts of the world, [4] with Norway being the world's largest producer of farmed salmon, followed by Chile. [5] They are also highly prized game fish for recreational fishing, by both freshwater and saltwater anglers.
Atlantic salmon do not require saltwater. Numerous examples of fully freshwater (i.e., "landlocked") populations of the species exist throughout the Northern Hemisphere, [2] including a now extinct population in Lake Ontario, which has been shown in recent studies to have spent its entire life cycle in the watershed of the lake. [22]
Sockeye salmon, unlike other species of Pacific salmon, feed extensively on zooplankton during both freshwater and saltwater life stages. [14] They also tend to feed on small aquatic organisms such as shrimp. Insects and occasionally snails are part of their diets at the juvenile stage. [3] [15]
Chinook, like many other species of salmon, are considered euryhaline, and thus live in both saltwater and freshwater environments throughout their life. Once hatching, salmon spend one to eight years in the ocean (averaging from three to four years) [19] before returning to their home rivers to spawn. The salmon undergo radical morphological ...
A salmon run is an annual fish migration event where many salmonid species, which are typically hatched in fresh water and live most of the adult life downstream in the ocean, swim back against the stream to the upper reaches of rivers to spawn on the gravel beds of small creeks. After spawning, all species of Pacific salmon and most Atlantic ...
hide. Aquaculture production of salmonids in tonnes 1950–2010 as reported by the FAO [ 1 ] Salmon farm in the archipelago of Finland. The aquaculture of salmonids is the farming and harvesting of salmonid fish under controlled conditions for both commercial and recreational purposes.
Salmon and striped bass are well-known anadromous fish, and freshwater eels are catadromous fish that make large migrations. The bull shark is a euryhaline species that moves at will from fresh to salt water, and many marine fish make a diel vertical migration , rising to the surface to feed at night and sinking to lower layers of the ocean by day.
Freshwater fish are fish species that spend some or all of their lives in bodies of fresh water such as rivers, lakes and inland wetlands, where the salinity is less than 1.05%. These environments differ from marine habitats in many ways, especially the difference in levels of osmolarity. To survive in fresh water, fish need a range of ...
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