Iki Jime (活き締め?) or Ike jime (活け締め?) is a method of paralyzing and bleeding fish to maintain its quality.[1] The technique originated in Japan, but is now in widespread use. It involves the insertion of a spike quickly and directly into the hind brain thereby causing immediate brain death. A fish brain is usually located slightly behind and above the eye. When spiked correctly, the fish fins flare and the fish relaxes, immediately ceasing all motion. The blood contained in the fish flesh retracts to the gut cavity, which produces a better coloured and flavoured fillet. This method seems to minimize the pain.

Yep, Ike-jime, a quick spike to the brain.

I use an old screwdriver that has been sharpened to a point. A quick firm push of it between the fishes eyes from the top of their head will do the trick every time.

ill be doing just that this afternoon im guess the same method would prob work on salmon and the likes althoguh im guessin its still prob better too bleed salmon the old school way with the old snap of the neck and buried upside down in the sand ?