Ikejime

It involves the insertion of a spike quickly and directly into the hindbrain, usually located slightly behind and above the eye, thereby causing immediate brain death.

After spiking the brain, a thin needle or piece of wire is inserted into the spinal column to prevent any further muscle movement.

[3] Furthermore, the blood contained in the fish flesh retracts to the gut cavity, which produces a better coloured and flavoured fillet, and prolongs shelf life.

Another technique[clarification needed] in APEC Air shipment of live and fresh fish and seafood guidelines is described as follows: "A cut is made toward the front of the flatfish severing the major artery and the spinal cord.

"[7] Ikejime has been successfully used manually in the tuna and yellowtail industries, along with limited use in sport and game fishing, as it provides a rapid slaughter technique.