Ilish (Hilsa): The Fish That Bengalis Worship

In September 2024, Bangladesh's interim government approved the export of 3,000 tonnes of hilsa to India ahead of Durga Puja. It made national news in both countries. Cabinet-level news, for a fish. If you've never eaten ইলিশ (ilish, /ilɪʃ/, hilsa), that sentence probably sounds absurd. If you have, you already understand.

No other fish occupies this position in a national imagination. Ilish is Bangladesh's national fish by official declaration, the subject of poetry, the centerpiece of at least three major festivals, and the reason otherwise reasonable people will pay ten times the price of any other fish in the market without blinking. This post covers what ilish actually is, why it costs what it costs, the dishes that define it, the export dispute that keeps making headlines, and the vocabulary you need to buy and order it yourself.

What Ilish Is, and Why It Isn't Available Year-Round

ইলিশ (ilish, hilsa, Tenualosa ilisha) is an anadromous fish: it lives in the sea but swims upriver into freshwater to spawn, the way salmon do. It travels up the Padma, the Meghna, and the Hooghly from the Bay of Bengal, and this migration is the entire reason the fish tastes the way it does and costs what it costs.

The prime season, ইলিশ মৌসুম (ilish mawshum, hilsa season), runs roughly June through September, monsoon months, when the fish are swimming upstream heavy with roe and at peak fat content. A river-caught ilish from this window, still carrying the silt-fed richness of the Padma, is a different animal from a thin, sea-caught ilish sold in the off-season. Bengalis can tell the difference by smell before the fish is even cut.

Scarcity is only half of why it's expensive. The other half is that ilish cannot be farmed. Every ilish on a market slab was caught wild, which means supply is capped by however many fish actually survive the run that year. Overfishing, dams, and river pollution have made good years scarcer, so a large পদ্মার ইলিশ (Padmar ilish, Padma River hilsa) weighing over a kilogram can sell for the equivalent of $30-40 USD at Dhaka's Karwan Bazar during peak season, a price that would buy several kilos of most other fish. Bengalis pay it anyway. Nobody apologizes for this.

The Three Dishes Worth Learning

শর্ষে ইলিশ (Shorshe Ilish)

শর্ষে ইলিশ (shorshe ilish, /ʃɔrʃe ilɪʃ/, hilsa in mustard sauce) is the dish people mean when they say "ilish" without qualification. Pieces of the fish are simmered in a paste of ground mustard seed, green chili, and mustard oil, sometimes with a spoon of yogurt to round the sharpness. The mustard is not a background note here. It's aggressive, sinus-clearing, and exactly the point. Home cooks argue for hours over how finely the mustard should be ground and whether black or yellow seeds make the better paste.

ইলিশ ভাপা (Ilish Bhapa)

ইলিশ ভাপা (ilish bhapa, /ilɪʃ bʰapa/, steamed hilsa) takes the same mustard-and-chili base but steams it instead of simmering it, traditionally wrapped in a banana leaf or sealed in a covered bowl set inside a larger pot of simmering water. The steaming method concentrates the mustard's aroma without cooking off its sharper edges, and the fish stays softer, almost custard-like, than the simmered version. Bhapa is the dish you serve when you want to show off technique rather than just feed people.

ইলিশ পাতুরি (Ilish Paturi)

ইলিশ পাতুরি (ilish paturi, /ilɪʃ paturi/, hilsa wrapped and steamed in banana leaf) marinates the fish in mustard paste, coconut, and green chili, wraps it tightly in a banana leaf secured with thread or a toothpick, and steams or lightly grills it. Unwrapping the parcel at the table (releasing a burst of banana-leaf-scented steam) is part of the dish's appeal. The leaf isn't decorative. It seals in moisture and imparts a faint vegetal sweetness you can't get any other way.

Bengali	Romanization	English
ইলিশ	ilish	hilsa fish
শর্ষে ইলিশ	shorshe ilish	hilsa in mustard sauce
ইলিশ ভাপা	ilish bhapa	steamed mustard hilsa
ইলিশ পাতুরি	ilish paturi	banana-leaf-wrapped hilsa
পদ্মার ইলিশ	Padmar ilish	Padma River hilsa (most prized)
ইলিশ মৌসুম	ilish mawshum	hilsa season (June-September)

These dishes sit inside a much larger Bengali food vocabulary, and the Bengali food vocabulary guide walks through the full meal structure that a dish like shorshe ilish belongs to, including where fish fits among the rice, dal, and vegetable courses.

Bangladesh's Export Ban, and Why It's Political

Since 2012, Bangladesh has restricted or banned ilish exports to India for most of the year, lifting the ban briefly, and selectively, usually around Durga Puja. The stated reason is conservation: keep the domestic catch at home, protect a national resource, prevent overfishing pressure from cross-border demand. The unstated reason is that ilish diplomacy has become a genuine instrument of India-Bangladesh relations.

When Bangladesh's government approves an export quota (the 2024 approval mentioned above was 3,000 tonnes, and past years have seen quotas as small as 500 tonnes or as generous as 5,000) it's read in both capitals as a goodwill gesture. When a government withholds it, that's read as a message too. Sheikh Hasina's government used ilish shipments to West Bengal as a semi-regular Puja gift for years; when Bangladesh's political situation shifted in 2024, commentators on both sides of the border immediately started asking whether the ilish would still cross.

This matters for a learner because it tells you something real about how food and diplomacy intersect in Bengali life, on both sides of a border that otherwise shares a language, a script, and most of a cuisine. If you want the fuller picture of how West Bengal and Bangladesh diverge and converge, the Kolkata versus Dhaka Bengali comparison covers the linguistic side of a split that runs through food, politics, and vocabulary alike.

The Bengali term for the restriction itself is straightforward: রপ্তানি নিষেধাজ্ঞা (roptani nishedhagga, /roptani niʃedʱaɡːa/, export ban). You'll see it in Bangladeshi news headlines every autumn, usually followed by speculation about whether an exception is coming.

Buying Ilish: Vocabulary for the Fish Market

A Bengali fish market (মাছের বাজার, machher bajar, /matʃʰer bad͡ʒar/) sells ilish whole, and knowing how to ask for it cut correctly matters, because a bad cut wastes the most expensive fish you'll buy all year.

এই ইলিশটা কত করে? Ei ilish-ta koto kore? /ei ilɪʃʈa koto kore/ "How much for this hilsa?"

কেটে টুকরো করে দিন Kete tukro kore din /kete ʈukro kore din/ "Please cut it into pieces."

পেটি আর গাদা আলাদা করে দেবেন Peti ar gada alada kore deben /peti ar ɡada alada kore deben/ "Please separate the belly and the back pieces."

That last phrase matters more than it looks. Ilish has two distinct cuts with different fans: পেটি (peti, belly cut) is fattier and considered the prize portion, while গাদা (gada, back/head cut) is bonier but has its own devotees who argue the flavor is more concentrated. A fishmonger who respects the customer separates the two automatically. One who doesn't will mix them, and you'll pay premium prices for a mixed bag.

Bengali	Romanization	English
মাছের বাজার	machher bajar	fish market
পেটি	peti	belly cut (prized)
গাদা	gada	back/head cut
কাঁটা	kaanta	fish bone
তাজা	taja	fresh
দর কষাকষি	dor koshakoshi	price haggling

Ilish is famously bony, more so than most fish Bengalis eat regularly, and the word কাঁটা (kaanta, bone) comes up constantly at the table, usually as a warning to children still learning to eat it without choking. Adults who grew up on ilish develop a kind of unconscious radar for the bones. Everyone else eats slowly and carefully, forever.

What the Fish Tells You

There's a Bengali saying, মাছে ভাতে বাঙালি (machhe bhaate Bangali, "fish and rice make a Bengali"), and if any single fish had to stand for that whole identity, it would be this one. Ilish isn't the best-tasting fish by universal consensus (it's oily, aggressively bony, and an acquired taste for plenty of non-Bengalis), but taste was never really the whole point. It's the fish tied to monsoon, to Padma silt, to a specific autumn when families across two countries argue about whether this year's shipment will cross the border in time for Puja.

If you're building vocabulary for Bengali food and culture more broadly, the rosogolla and Bengali sweets guide covers the other end of a Bengali meal, the sweets that follow a fish course like this one. And if you want to hear shorshe ilish and peti pronounced the way a Kolkata or Dhaka fishmonger would say them, the Brightwood Apps Learn Bengali app includes native-speaker audio for food and market vocabulary across its curriculum.