Basically you use it to spike the fish in the brain, killing it instantly. I have seen through our own hit and miss attempts really mess this up and miss the brain, only having to repeat the task over and over again until you see the fish suddenly stop moving. I am a huge fan of Killing a fish as quite as possible, in fact if I intend on keeping the fish I will kill it before any high fives or photos – this is just a mark of respect I have for fish. Due to vague write ups and “general” descriptions on how to kill a Snapper affectively, I have decided to do my own research and dissect a Snapper Head. To show exactly where the brain is located and what the size is. It wasn’t till I opened up the head that I relised just how off I was and also it gave me a very good precise area for the brain – dispelling a lot of what others had said.

Let’s get into it.

Below are photos I took of a Snapper I chopped open to show where its brain really is. I don’t apologies for the graphic nature of these photos as I know gutting and killing a fish is not a clean process and if you are only use to finished clean fillets – killing and eating your own fish is not for you. Please also note this fish is well dead before I attempted to chop it up and was killed very quickly, it did not suffer. This is a Smaller Pan size Snapper and the reason I chose this is that it is often the size people catch and keep (best eating in my opinion and they aren’t breeding stock).

Snapper before dissection

This is the Cross Section of Snapper Head showing the where the brain is located

This Shows the iki going straight through the brain as located from the cross section done

This shows the exact spot to iki a Snapper to hit the Brain. I used the cross section of the head and pushed the iki spike directly through, there was no angle on the iki spike.

This is the hole made after taking the iki spike out, it shows very clear where to insert your iki to hit the Snapper

So from these pictures you should get a good idea of where the brain is located and how to hit the brain when you are faced with a Snapper. There is no need to put any angle on the iki spike as this may lead to you missing the brain and not killing the Snapper. If you don’t hit the brain there is a good chance the Snapper will take 20 – 30 mins to suffocate to death. This has issues other than the basic disrespect you have for what you eat. Leaving a fish to die this way causes the meat to degrade in a huge way. A build up of lactic acid and other chemicals the fish’s body releases in an effort to combat the effects of suffocation result in bad tasting fish, come meal time. This is the same for any fish. The best practice is to kill the fish as soon as you have decided you will keep it.

The best way to know if you have hit the brain is that the fish will stop moving straight away and may start to have tiny spasms. You will also see that its gills aren’t moving anymore, if there is still gill movement or it is still flapping then the Snapper is still alive and you need to spike it again till it stops. Sometimes after killing a Snapper they may still flap the odd time, this is just nerve activity.