Preserve beautiful subjects in streams to ensure effective breeding.
– IM
There must be a good grain size to allow spawning grounds to exist.
If the water is 10 degrees it will sometimes take 40 days for the egg to become a small larva and hatch.
IMAGES TO ILLUSTRATE:
A LINK TO GO FURTHER:
Genetic study of brown trout on the site of the Federation of fishing for the Ardeche and the protection of aquatic environments.