According to an article in a Chinese fishing magazine, the scene in which we see brown bears hunting salmon in streams in the animal world is actually a promotional film for Alaska tourism. Large numbers of salmon spawn year after year, which has also led to the development of salmon flies in North America. North America used to be dominated by smelts, trout, and American sockeye salmon, but not so long ago there were chellonds and salmon that migrated upstream (to Alaska) to spawn.
The salmonid has one special mark in common with all other fish: it has a spiny, soft fin between the dorsal fin and the tail fin - the fatty fin. Salmonid fish genera are many, are economic edible fish, distributed in Europe, North America and Asia in Kazakhstan and a small part of China, salmonid fish are brook trout, river trout, sea trout, rainbow trout, smelt, lake red point salmon, American red point salmon, Arctic Anise, Zhe Luo fish and fine scale fish and whitefish family mainly distributed in the Bering Strait south of Russia and northern Europe, There are high whitefish, hollow whitefish, golden one redefish, lamb redefish, Tugui whitefish, bamboo bamboo whitefish, Zier whitefish and Atlantic salmon. It has been 40 years since these salmon were successfully introduced to the Serimu High Mountain (cold water) Lake in Yili, Xinjiang. In Xinjiang and Russia, Kazakhstan border Altai Mountains have a large number of Zhe Luo fish (large red fish), fine scale fish and Arctic grayling.
Salmon flies are larger in appearance than common flies, and because of the larger size of the target fish, they are made using double claws and triple hooks. Nowadays, due to the restrictions of animal protection laws, beautiful wild pheasant feathers are no longer available. Gradually, colorful artificial fibers and deer, roe deer, badger, fox and squirrel fur are used.
Although salmonids feed primarily underwater, dry flies are still a popular float fly and casting method for anglers. Technically, it requires dry flies to float on the surface of the water at all times, mimicking depleted insects. The nymphs, which gradually grow into pupae or insect shape in 1 to 3 years after they emerge from the eggs, are the first growth stage before the "dry fly" is mature. In trichoptera, remember that some larvae do not have adhesive tubes, they float freely and everywhere, so the nymphs should also be shown to the fish in the position and water level judged by the angler. This requires that there must be several nymphs of different weights and buoyancy in the fly box for fishing in different water layers and different flow rates. Anglers are not always so carefree, and nymphs are also dangerous, often snagging the complicated river bottom, like singers on stage who suddenly forget the lyrics. Many people in Europe regard nymphal fishing as the best form of fishing because it requires comprehensive practical knowledge and extensive experience.
In Europe and the United States for many years mainly with roe deer hair production, also with feathers, in order to ensure that the fly for a long time to float, manufacturers and produced "bird tail oil" for coating and hair, they as far as possible with a thin line tied to the thin hook strip to reduce weight. Salmon flies choose colorful pheasant feathers in pursuit of imaginary grandeur, completely ignoring any natural samples. The recorded samples are about 200 years old, and old samples are highly sought-after collectibles, and people abroad will pay astronomical sums for them.