Why Do Salmon Swim Upstream (Fish Facts Explained)

Why Do Salmon Swim Upstream? (Fish Facts Explained)
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The migrating salmon need cool and well-oxygenated water simply to be able to make the entire journey upstream and once the eggs are laid (usually in gravel beds), their continued survival heavily depends on the presence of oxygen in the water.Yet another reason for the salmon to swim high up the rivers is security. As mentioned above, the deeper and wider a stretch of river is, the easier it is for predators, such as bigger fish and birds, to access it.The river stretches with gravel beds that salmon use to spawn in are usually extremely shallow, making it difficult, or outright impossible for larger predators to reach.
How Far Do Salmon Swim Upstream?
Salmon can swim hundreds or even thousands of miles to get to their spawning grounds. In fact, salmon have one of the longest migration patterns in the fish world.
Atlantic salmon in particular often cover vast distances to get to their home rivers. It is suggested that some stocks travel as far as 6000 miles through the ocean before entering the freshwater territory.And it doesn’t end there; some Atlantic salmon stocks spawn in huge river systems that force them to swim up to 200 miles upstream before they finally arrive at their final destination. It’s no wonder that they die of exhaustion after they’re done spawning, is it!
How Long Does it Take Salmon to Swim Upstream?
On average, it takes salmon two to three weeks to make their way upstream and reach their spawning ground.Of course, the amount of time highly depends on the river system the salmon migrate through. It can take more days if the fish encounter plenty of obstacles on their way up and fewer days if the river current is below average.
During their way up the rivers, salmon reduce their feeding activity to a bare minimum and instead focus all of their attention on reaching those spawning grounds. If they eat while swimming upstream, it will only be sporadically and during very short periods.Instead, it’s more of a reflex linked to their predatory instincts. If they see an insect (your fly) passing by, they will simply open their mouths and inhale it, mostly out of sheer habit. At least in theory!And while this doesn’t seem to be the biggest of challenges for an angler, it is just that! Because most of the time, the theory doesn’t hold up! What happens nine times out of ten, and I am talking from personal experience here, is that the salmon will actually not go for your fly and simply ignore it.Or maybe it just passes by way too fast, so the salmon doesn’t even have time to notice it.Either way, if you manage to actually catch a migrating salmon on your fly, you can consider yourself a very skilled, and lucky fisherman!Trust me, it can be extremely frustrating to fish a river that’s full of salmon and virtually none of them show any interest whatsoever in that fly of yours. Until one finally does and the fight of a lifetime is on!Why Do Salmon Jump in Rivers?Salmon often jump in rivers to get over obstacles that would otherwise prevent them from continuing their journey upstream. Common obstacles and barriers include dams, waterfalls, and culverts.Other obstacles that salmon may have to jump over include sunken trees, floating logs, and simply rapids.
OUTRO
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NOTES:
source: uk.whales.org/whales-dolphins...
#WhyDoSalmonSwimUpstream
#salmon
#salmonfish

[@balanciashipagency]

Why Do Salmon Swim Upstream? (Fish Facts Explained)

[@angelminaj617]

The "L" is silent in salmon

[@dthorne4602]

thank god he doesn't know that. This is wonderful. LOL

[@guardian100]

I live in Scotland,so we are blessed by the salmon runs,such an amazing creature,i often take my son to watch them jump up the waterfalls, just as my Dad did with me, seeing our first salmon of the year,is considered lucky in some parts of Scotland, but unfortunately they are smaller and coming in smaller numbers than they used to .Such an amazing fish to catch on the fly, no other fish fights the same.

[@COGNITIVE90]

Awseome video