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Grilse - Fish Identification and Recognition

 
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grilse

Identification of Grilse (one sea winter salmon), which comprise most of the annual rod catch is difficult. Salmon grilse are often indistinguishable from multi sea winter (MSW) salmon except by scale reading. They are smaller on average (2-3lb in May, 5-7lb in July) but when they enter rivers in September often attain 8-10lb and in October 12-15lb. Salmon usually weigh over 8lb. Most are two sea winter (2SW) fish; these are returning in spring average 8-10lb, in summer 12-14lb, in autumn 16 - 18lb. Salmon tend to double in weight during each full growing period (May - Oct) spent at sea.

grilse photograph zoom

How to identify salmon from sea trout

How to identify salmon parr from tout parr

To estimate the weight of a salmon from its length see - nomograph

Published courtesy of the Atlantic Salmon Trust and Robin Ade. The above information is printed by the Trust as both a wall poster and post cards. Reproduction is much better than can be achieved on the web. The poster in particular is a must for fishing huts and educational establishments.

The Atlantic Salmon Trust
7 Kirkmichael Road
Pitlochry
PH16 5JQ
Tel. 01796 473 439

 
 
 

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