The Tuna Wars: What I Learned About Human Irrationality from Stalking Supermarket Shelves

I have a confession: I've been spending an embarrassing amount of time thinking about tuna cans. Not eating them—God knows there are limits—but studying them with the obsessive intensity of a lepidopterist examining rare butterflies.

You see, there's a war happening in Tunisian supermarkets. A quiet, vicious little war that most people walk past without noticing, wheeling their trolleys between aisles of what appears to be commodity hell. But peer closer, and you'll discover one of the purest laboratory experiments in human psychology currently running anywhere on earth.

The Tunisian tuna market is teaching us things about consumer behavior that Harvard Business School case studies can only dream of. And the lessons are deliciously, brutally simple.

The Beautiful Stupidity of Choice

Here's what I love about this market: it's been accidentally designed to reveal the three—and only three—dimensions that actually matter when humans make purchasing decisions:

1. Price (the rational bit)

2. Differentiation (the stuff we tell ourselves matters)  

3. Distinctiveness (the bit that actually drives behavior)

Notice what's missing? Quality. Oh, sweet, naive quality—the thing every business school graduate thinks matters most. More on that magnificent delusion shortly.

For years, this market operated as a perfect behavioral economics textbook. Two types of brands survived: the expensive ones that looked fancy (El Manar, Thon Hal9 il Wed) and the cheap ones that were impossible to miss. Everything else—every sensible, rationally-priced, moderately-differentiated brand—died horrible, predictable deaths.

Why? Because human beings don't actually have sophisticated price sensitivity. We have exactly two price buckets rattling around in our heads: "expensive stuff" and "normal stuff." There is no middle bucket. The middle is where brands go to suffocate.

The Magnificent Stupidity of the Yellow Can

Now comes my favorite character in this drama: Thon Sidi Ali and their gloriously, absurdly yellow can.

For years years this was the only yellow tuna can with decent distribution. Customers didn't know its name. They didn't care about its provenance or its olive oil credentials. They walked into shops and asked for "the yellow tuna can."

This is System 1 thinking in its purest form. No deliberation, no comparison shopping, no careful consideration of nutritional information. Just: "I want cheap tuna" → "Yellow can" → "Job done."

The brand even had the genius to reinforce this with advertising so simple it hurt: "Hoka thon safra thon"—literally "This is yellow tuna." It's the marketing equivalent of pointing at something and grunting. Magnificent.

But here's where our tale becomes a parable about the tragedy of the commons.

Success, as Oscar Wilde noted, is the one unpardonable sin. Nine other brands saw the yellow strategy working and promptly... turned yellow. Within months, the supermarket aisles looked like a Van Gogh fever dream.

Suddenly, yellow didn't mean "Sidi Ali." It meant "generic cheap tuna category." The distinctive asset that had taken years to build was destroyed in months by copycats who confused tactics with strategy.

This is why we can't have nice things.

The Great Quality Delusion

Let me tell you the tuna industry's dirty little secret: every factory produces the same spectrum of quality. They take the same fish and sort it into whole parts (which they call "premium"), individual chunks (which they call "standard"), and the bits that fall through the cracks (which they call "economy").

The entire industry is essentially one big production line with three different exit ramps.

So when El Manar charges premium prices for their "individual parts," they're not selling better tuna—they're selling the perception of better tuna. The difference between their product and the cheap stuff is often invisible to anyone who isn't a professional tuna grader (and yes, that's apparently a real job).

But here's the thing: perception  isreality in the consumer's mind. El Manar understood that signaling quality matters infinitely more than delivering imperceptible quality improvements.

They cracked the code with brilliantly simple psychological triggers: individual chunks (which sound premium but are actually mid-grade), distinctive packaging that whispers "expensive," and pricing that anchors expectations.

Thon Hal9 il Wed went even further: they added a transparent plastic cap—completely unnecessary from a functional perspective—that screams "premium product" to the lizard brain making split-second purchase decisions.

These brands aren't selling fish. They're selling the feeling of making a sophisticated choice.

The Availability Bias Trap

Here's where most marketing wisdom goes to die: on the shelves.

You can have the most distinctive packaging, the cleverest advertising, the most psychologically sophisticated positioning in the world. But if your product isn't there when customers are making their 2.7-second purchase decision, you might as well not exist.

The yellow can revolution succeeded not because yellow is inherently appealing (it's not), but because Sidi Ali had the distribution muscle to ensure their yellow cans were consistently, reliably present when customers wanted cheap tuna.

Availability is the ultimate distinctive asset. It's also the most boring one, which is why most marketers ignore it in favor of sexier Brand Purpose initiatives.

The Memory Formation Fallacy

The final act of our tuna tragedy reveals perhaps the most expensive mistake in modern marketing: the belief that you can build mental availability through seasonal advertising blitzes.

Most tuna brands disappear for eleven months, then assault consumers with intensive TV campaigns during Ramadan, assuming this will somehow encode their brand permanently in people's memories.

This is like trying to learn a language by taking an intensive course once a year. It doesn't work because human memory doesn't work that way.

Memory formation requires consistent, low-level exposure over long periods. The brands that survive will be those that understand: salience is built in the quiet moments between purchases, when your distinctive assets slowly, almost imperceptibly, embed themselves in customers' minds.

What the Tuna Taught Me

The beautiful thing about studying seemingly mundane markets is that they strip away all the bullshit. No one's trying to build an authentic connection with tuna customers or create a movement around preserved fish. It's pure, naked consumer psychology.

And what does that psychology teach us?

That rational differentiation is largely pointless.Customers can't perceive most quality differences, and wouldn't care if they could.

That distinctive assets are everything. Being recognizable matters infinitely more than being marginally better.

That the middle ground is a marketing graveyard.Be premium or be cheap, but never be reasonable.

That distribution trumps communication. Being available beats being memorable.

That consistency beats intensity.Drip-feed beats fire-hose, every time.

The next time you're wandering through a supermarket, spare a thought for those humble tuna cans. They're not just preserved fish—they're a living laboratory of human irrationality, quietly demonstrating truths that billion-dollar brands spend fortunes trying to discover.

Sometimes the most profound insights come from the most prosaic places. You just need to know how to look.