Salmon and trout Parr
Salmon and trout parr are not so easy tell apart unless
you get hold of them. Fry are even worse! When viewed
in the water salmon fry and parr tend to be isolated.
Salmon are much more territorial, so if you see a shoal
of fry or parr they are much more likely to be trout.
Salmon parr also tend to keep to the faster riffles.
They have bigger pectoral fins, which they use to hold
station in the fast water. Trout are less well adapted
to these conditions and seek out slacker water. Contrary
to the beliefs of the old time salmon keepers there
is little competition between the two species since
they prefer different environments.
Salmon Parr can normally be distinguished
from young Brown/Sea Trout by:
the more streamlined shape
deeply forked tail
longer pectoral fin
lack of orange on the adipose fin
only 1-4 spots on gill cover (often one large
well defined parr marks.
shorter maxilla (does not extend beyond the
Parr are the future stocks of a river. Take particular
care with them. Make sure they always go back unharmed.
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
The Atlantic Salmon Trust
7 Kirkmichael Road
Tel. 01796 473 439