Edinburgh Natural History Society


Salmon Tagging at Paxton on the Tweed

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Our walk around Paxton House included a fortuitous coincidence watching salmon being caught and tagged for conservation reasons. Capture-recapture methodology allows population numbers to be assessed. From biometric figures, growth rates, ages and population health can be deduced.
Catching the fish takes place at several sites annually using the age-old commercial method of netting during up-river migration.
The excitement builds as the noose tightens.
Carefully a fish is transferred to a keep net.
Kept in an oxygenated tank, in the dark and slightly anaesthetised, until processing begins.
Measurements (biometrics) and tagging takes place quickly.
A numbered tag is clipped to the dorsal fin rays.
The gentle return to the river begins.
Photographs: S. Crowther.
Scottish Charity No SC 004669. Reach us at:
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This page was last updated on 14/12/11.