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It can be a few days to several weeks, depending on many factors...the health and stamina of the fish, the conditions of the river, how fast the water is flowing, and how far up river the fish needs to go to return to the point or near the point where it hatched. The salmon must reach a point far enough up the river where salt water can't reach the eggs. Some salmon, for example the humpback or pink salmon that spawn in the Indian River in Sitka, AK, the trip can take just a few days. For others, for example, the Chinook, or King salmon that travel up the Feather River in Oroville, CA from the San Francisco Bay, it can take weeks.

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12y ago
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7y ago

As far as it needed to reach the spawning grounds. Chinook and sockeye salmon can travel as far as 900 miles inland to reach their spawning grounds.

Answer2: In addition to the above comment, I read a very interesting article about the salmon. In order to breed many salmon species swim upstream, facing turbulent waters along the way. Instead of being overwhelmed by the rough water, these fish actually take advantage of it. The do not plough through chaotic water. Instead when swimming upstream, they conserve energy by using vortices, or miniature whirlpools , that form where the water flow is disturbed by rocks, branches, or other objects. As the vortices form on alternating sides of an object, the fish curve their bodies from side to side and glide between the pockets of turbulence. Some schools of fish use the vortices created by the fish swimming in front of them, effectively riding in their wake. The fish can take advantage of the turbulence created by their own bodies. Researchers hope to borrow from the salmon's efficient swimming style to harvest energy from slow-moving water.

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Q: How old is a salmon before they spawn?
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Related questions

What do salmon do just before they die?

They spawn.


How long does salmon spend at sea?

Salmon spend most of their lives in saltwater and only return to freshwater to spawn. Different species of salmon spend different lengths of time in the ocean due to differences in the amount of time it takes the salmon to sexually mature. Most salmon spend between 1 and 5 years in the Ocean before returning to freshwater to spawn and die.


What is the name of a baby trout?

A young salmon (or a trout of the salmon family) is called smolt.


What fishes swim miles upstream to spawn?

salmon


What month do salmon start the journey back up stream?

It depends on the species of the salmon, Chinook (King) Salmon spawn between the months of September and October. Coho (Silver) Salmon spawn between the months of October and November. And Atlantic Salmon spawn between the months of November and December.


What dangers do salmon encounter on their journey to spawn?

Salmon encounter much hardships on their journey to spawn. A salmon has to swim the opposite way a stream is flowing, Salmon have to jump up mini waterfalls where hungry brown or black bears are waiting, other fish tend to eat the eggs or the fish that are about to spawn, they risk getting eaten by birds such as gannets and hawks and humans tend to prey on Salmon to eat.


Name of a Fish which travels up a river to spawn?

Salmon is one fish that travels up a river to spawn.


What is a fish that lives in a area and travels to another to spawn?

Salmon live in the ocean, but swim up rivers to spawn.


Why do bears go to rapid rivers to catch salmon?

because Salmon are swimming upstream to spawn and the bear knows....they can sense them.


Does a salmon or a whale produce more young at once?

Salmon spawn, laying all their eggs at once before dying. Whales give birth to a single calf at a time, although smaller species occasionally have twins. So, salmon have more young at once.


What fish returns from the ocean to the fresh waters where it was born?

Salmon are born in fresh water, migrate to the ocean and then return to the fresh water to spawn. Salmon have the reputation of returning to the same place they were born in order to spawn.


Where do salmon spawn in UK?

FRS Freshwater Laboratory Faskally Pitlochry Perthshire