The single biggest difference between a confident iki jime dispatch and a frustrating one usually comes down to one thing: knowing exactly where you're aiming. Get it right and it's one smooth motion. Get it wrong and you're left second-guessing yourself with a fish flapping around on deck — which defeats the purpose entirely.
Here's how to approach it.
The general rule of thumb
For a lot of common fish species, the brain sits roughly behind and slightly above the eye, protected within the skull. As a starting point, picture a line running from the top of the eye back toward the top of the gill plate — the brain is generally found in that general region, closer to the eye than the gills.
That's a useful starting point, but it's exactly that — a starting point, not a hard rule. Fish anatomy varies more than people expect between species, and even between individuals of very different sizes within the same species. A flathead, a snapper and a tuna don't share identical skull shapes, and a technique that works perfectly on one won't necessarily transfer directly to another without adjustment.
Why it's worth doing the homework
This is the part that separates anglers who get frustrated with iki jime and give up, from anglers who make it second nature. Before you're standing on a moving deck with a fish in one hand and a spike in the other is not the time to be guessing. A bit of homework beforehand — a quick search for your target species, a look at a diagram, even a practice run on a fish you've already caught and aren't in a rush with — pays off enormously once you're actually fishing.
If you regularly target a handful of species, it's worth taking the time to properly understand the anatomy of each one rather than relying on a single generic technique for everything you catch.
Using the tool with confidence
Once you know roughly where you're aiming, the technique itself is simple: a firm, deliberate, controlled motion — not a tentative jab. This is exactly why the Original IkiPik is built the way it is. The contoured handle is shaped to sit securely in a wet, cold hand, so you can commit to the motion with confidence rather than worrying about the spike slipping or your grip failing at the wrong moment. The bright yellow finish also means you're not fumbling around looking for it in a tackle bag or on a cluttered deck when you need it.
A confident, well-placed strike is quicker for the fish and safer for you — hesitant, repeated attempts are worse for everyone involved, including your fingers.
A few practical tips
- Hold the fish firmly and calmly. A relaxed, controlled grip makes it easier to find your mark than trying to wrestle a thrashing fish.
- Aim, don't stab blind. Take the half-second needed to actually locate the eye and gill plate before you commit to the motion.
- Commit fully once you've found your mark. A firm, single motion is more effective — and ultimately kinder — than several tentative attempts.
- Follow up with shinkei jime and bleeding if you're keeping the fish for the table. Dispatch is step one, not the whole process — see our guide on iki jime vs shinkei jime for the full sequence.
A note on safety and responsibility
This article is general guidance, not a substitute for learning the anatomy of your specific target species. Positioning varies between species and individual fish, so take the time to familiarise yourself before you're relying on it in the field. Always handle sharp tools with care, keep them well away from children, and make sure whatever you're doing complies with your local fishing regulations and bag limits.
Once you've got the technique down, it becomes genuinely quick — often quicker than most other methods of dispatch, and a lot more controlled.
Ready to get set up? Take a look at the Original IkiPik or the full Iki Jime / Shinkei Jime Kit.