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Guide to scale interpretation and age estimation for Atlantic Salmon (Salmo salar) from French populations | Guides et protocoles |

Belonging to the genus Salmo, the Atlantic Salmon is a species in the family Salmonidae and the subfamily Salmoninae. The Atlantic Salmon is still present in numerous rivers of the French Channel-Atlantic seafront. It has always been absent from the Mediterranean. The overall objective of this guide is to serve as a user manual for interpreting the scales and estimating the age of the Atlantic Salmon (Salmo salar) from the French Atlantic Salmon populations.

 GP2023_Atlantic-Salmon-Scales_couv.jpg

Guide to the interpretation of the scales and the estimation of the age of brown trout (Salmo trutta) from the French populations | Guides et protocoles |

Three biological forms of brown trout, river, lake and sea, have colonised a large number of aquatic environments in France, owing to a high ecological plasticity of the species. The overall objective of this guide is to serve as a user manual for interpreting the scales and estimating the age of brown trout (Salmo trutta) from the French trout populations.

GP2020_Brown_trout_Scales_couv