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Implantation
Several studies show well differentiated populations and a genetic variability of those. This phenomenon gives to the species remarkable adaptabilities in varied habitats. These specific populations are the result of geographical long periods of insulations.
The surface of distribution of the Shade covers the Central Europe and , of France in Great Britain, Lapland as far as Yugoslavia (). The Shade is undoubtedly originating in the mining area of the Danube dice . In Scandinavia its presence would go back to the end of the last glaciation. The ship canals are undoubtedly at the origin of its towards the west (the Seine and the Loire) at the Century. The Shade is indigenous in France. It was introduced successfully in the High-Seine, in the Loire, the Dordogne and .
Lifestyle
This fish attends the rivers with the pure water, cool (12 to 16°C) and oxygenated well. It seeks there funds made up of gravels, sands or rollers. The Shade is also present in mountain up to 1. of altitude, in running water. The Shade saw in of the same test rigs age group. It nourishes molluscs and shellfish. He does not scorn the larvae of insects and the insects which fall to him from the sky. In lake (), it adapts by also nourishing planktons and small fish.
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Scientific name:
Family:
Other names: Shade commun run - English:
Maximum weight: g (0,5 with g)
Maximum size: 50 cm (. 30 to 40 cm)
Lifespan: 6 years
Period of abrasion: March at June
Bridge: 3.000 to 6.000 ovocytes per kg of F.
The Shade has a body lengthened enough with a squat back whose hue varies thegreenish one with thebluish one. Its sides forward reflections silver plated and gilded with some problems. The distribution of the points constitutes an alive method of individual identification of the Shades in a . The dorsal fin is of red, high and long color. Its mouth small and is furnished with small teeth. The eye of the Shade has the effect of being stretched at a peak forwards.
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The sexual maturity of the Shade intervenes around 2,3 or even 4 years. The laying intervenes in spring in a water with approximately 10°C. The choice of the spawning ground by the sires depends all at the same time his depth, of the nature of the content and the circulation of water goshawks of the embryos which will be there soon. The males install the guard on the spawning ground approximately 2 weeks, while the female does not remain there which 24 hours at most until the moment of the laying.
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Its growth would be in France such as: 10,5 cm with 1 year - 21 cm at 2 years 28 cm at 3 years whereas in same time its weight passes from 12 G to 238 G
Nowadays, the Shade is the purpose of Protective measures. Indeed the , and the installation of the , but also the shares of fisheries contributed to a certain restriction of its surface. The females deposit their eggs in several times. Incubation will last approximately 20 days in a water with 10°C.
Fish
To fish it, maggots and worms give good performances but the purists will undoubtedly prefer to fish it with the fly. A cane of , of intermediate share is ideal. The line to be used must be floating and the bottom of line of the Long type with a hook 12.
If maggots and worms are appreciated, the shrimp attracts also the shade.
To identify it well
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