Native Fishes
The Arctic salmon is a beautiful and colorful fish, especially the wild male, which is very popular.
Because of its solid flesh, the Arctic salmon is considered a delicacy on the dining table. And is very popular with fishing enthusiasts.
Arctic salmon is not very widely distributed.
There are four main representative families, with the exception of the Norwegian family, which is restricted to Norway and adjacent waters, and the other three families, all of which are found in specific waters of northern Canada.
They are the Labrador, Nauyuk, and Tree River families.
The Labrador lineage is found in the Labrador region of Newfoundland in northeastern Canada.
Nuuk salmon are found in and around Nauyuk Lake in the Northwest Territories of Canada.
In 1978, the first wild Arctic salmon was caught from Nayuk Lake in the Northwest Territories and named Nayuk Arctic salmon.
Later in 1980, another species of Arctic salmon were caught from the Fraser River in the northeastern region of Lepidoth and was named Lepidoth Arctic salmon.
Compared to the Lepidopterygian Arctic salmon, the Nayuk line is characterized by its larger size.
The wild fish can weigh up to 30 pounds and is known as the King of the Arctic, and can live up to 40 years.
They reach sexual maturity at about 4 or 5 years of age. The spawning period is generally concentrated in the autumn, from the end of August to the middle of September.
Each female can produce 2,000 to 3,000 eggs with a diameter of 5 mm.
The Lepidocypris salmon is small, with a maximum weight of 10 pounds and a life span of about 15 years, reaching sexual maturity at the age of 3 or 4 years.
The annual spawning period lasts for a long time, from October to March.
Each female can produce 4,000 to 5,000 eggs with a diameter of 4.5 to 5 mm.
In Canada, the Lepidochee Arctic salmon has a much wider distribution than the Nayuk Arctic salmon.
Arctic salmon are very cold tolerant and therefore are better suited for rearing in colder waters.
Generally, the water temperature should be controlled between 4°C and 5°C during the egg-hatching stage.
After the baby hatches out, feeding can be started. The growth condition of Arctic salmon is not different from rainbow trout.
And when the water temperature is below 15 °C, Arctic salmon grow faster and better than rainbow trout.
If the water temperature is higher than 15 ℃, the growth of Arctic salmon will be worse than rainbow trout.
The survival rate of Arctic salmon at the hatching stage is lower, even lower than rainbow trout. Generally speaking, a survival rate of 35% is very good.
Arctic salmon like to live in a group together, so under certain conditions, the higher the density, the faster the growth.
The growth of Arctic salmon is fast but uneven, even if they belong to the same family, they need to be screened and separated frequently.
This not only prevents the phenomenon of large fish eating small fish, but also allows for more effective control of the time when fresh fish is available.