Hi All,
Interesting indeed .....
Salmon feed during their migration,right up until they reach the estuarine waters of their birth river.
Sustenance from there in is drawn from energy reserves stored within the fish's body..ie:natural body oils stored in the tissue and calcium absorbed from the scale layer.
Obviously the trials and tribulations of running a river heavy with falls and white water can only rapidly deplete energy levels !
When you consider the forces of nature that are against a salmon's advancement upstream the distances travelled and the sheer effort and determination required to conquer these natural obstacles...
Does playing a fish on rod and line endanger their energy levels to the point of endangering life itself ?
Exhaustion can be a killer and all fish stress out remarkably quickly this too can kill.
Playing a fish 'by the book' until it rolls onto it's side exhausted prior to being drawn over the net is acceptable.
Aiding the fish in it's release by holding it's head into the current to allow it to 'get it's breath back' is acceptable.
We have all felt that Strong Kick as the fish shoots from our hands disappearing into the depths.
I firmly believe that a well played salmon returned with care in the prescribed manner will survive and go forth to procreate.
It is not uncommon for salmon to rest up in an individual pool for days lf not weeks on end..Undoubtedly a prime reason for this behaviour is to re-cooperate and sustain as much energy as possible...These resident stale fish are often found mid stream occupying the best lyes and in well oxygenated water with adequate cover.
{read more about holding/resting pools at....
OF HILL AND LOCH
Irrelevant of whether or not they have been caught and released.
As responsible anglers returning fish must be beneficial to the species in general..Most will survive the fight on rod and line-a few will perish through the consequences of such action.
At the end of the day Nature's way can only be summed by that old cliche
''Survival Of The Fittest''