Hilsa (Ilish) Nutrition: Omega-3, Calories and How Often to Eat It

That richness raises fair questions. Is it good for the heart or too fatty? How many calories sit in a piece of shorshe ilish? Does frying ruin the omega-3? And how often can someone with high cholesterol or gout eat it through the season? What follows answers each, using measurements made on hilsa itself wherever they exist.

What makes hilsa different from other fish?

Its fat. Hilsa (Tenualosa ilisha) is a shad, a relative of the herring, that lives in the sea and swims up rivers such as the Hooghly, Padma and Godavari to spawn. Before that journey it stores oil in its flesh, which is why a pre-spawning monsoon fish tastes so rich. Rohu and katla usually carry only a few per cent fat. Hilsa sampled by ICAR's Central Inland Fisheries Research Institute (CIFRI) held close to 10 per cent in Hooghly fish and about 8 per cent in Padma fish, and other catches measure higher still. Scientists at CIFRI also found the umami amino acids glutamic and aspartic acid in abundance, which helps explain a flavour no other fish quite copies.

How many calories are in a piece of hilsa?

A 100 g portion of raw hilsa flesh gives roughly 150 to 260 kcal, and the spread is honest rather than vague. Protein contributes a steady 70 to 85 kcal. Fat moves the total, because a lean post-spawning fish may hold 8 g of fat per 100 g and a fat monsoon fish 20 g or more. A typical steak cut from the middle of a medium fish weighs 80 to 120 g with bone, and the edible part is smaller once the fine bones come out. The cooking adds more than people expect: every tablespoon of mustard oil poured over rice from the frying pan adds about 120 kcal. The recipe decides as much as the fish.

How much protein does hilsa have?

Hilsa flesh is 18 to 21 per cent protein by weight, so a 100 g portion gives about 18 to 21 g, comparable to chicken or rohu. The CIFRI analysis of fish from the Hooghly and Padma found that figure in both rivers, with the essential amino acids lysine and valine and the amino acids leucine and arginine significantly higher in Hooghly fish. Fish protein is complete and easily digested, which matters for older adults whose appetite is small. For a family eating mostly rice and dal, one piece of ilish at lunch meaningfully lifts the quality of the day's protein, as the Bengali diet chart shows across a full week of meals.

Is hilsa high in omega-3?

Yes. When CIFRI and partner institutes measured the fatty acid profile of 39 food fishes from India in 2016, they named hilsa among the richest sources of the long-chain omega-3 fats DHA and EPA, alongside oil sardine, threadfin bream and koi. These are the forms the body uses directly in heart rhythm, cell membranes and the developing brain, unlike the plant omega-3 in flaxseed and mustard seed, which the body converts poorly. The exact amount in a given fish varies with river, size and season, so a precise milligram figure per piece would be false precision. The broad comparison of fish, seeds and capsules is set out in the post on omega-3 foods and capsules.

Why the Hooghly fish tastes richer

Bengalis have argued for generations over whether Padma or Ganga ilish is better, and the laboratory has now weighed in. In the CIFRI comparison, medium Hooghly fish of 500 to 700 g carried more oil, more EPA and DHA and more of several essential amino acids than Padma fish. A later ICAR study of different size groups found that the flavour-linked fatty acids and amino acids also shift as hilsa grows, and that fish above 800 g from the two rivers differed in taste panels. None of this settles the family argument, since a single season's samples cannot, but it confirms that taste and nutrition travel together in this fish. Where and when it was caught changes what reaches the plate.

Does frying hilsa destroy the omega-3?

Long frying does destroy much of it, while a short fry does far less harm. A 2026 study fried hilsa in mustard oil at 170 to 180 degrees Celsius for up to 12 minutes. Moisture fell sharply, fat on a wet-weight basis rose from 18.52 to 21.26 per cent as oil soaked in, and the longest fry cut EPA by 59 per cent while saturated and trans fats rose. Tasters preferred fish fried for 3 to 6 minutes, which is also kinder to the fats. Steaming as in ilish bhapa, wrapping in banana leaf for paturi, or simmering a light jhol keeps more omega-3 and adds less oil. A shorshe ilish made with a spoon of oil rather than a pool of it is a fair everyday compromise.

Is hilsa good for the heart, or too fatty?

For most people hilsa is good for the heart, and its fat is the reason rather than the problem. A 2006 JAMA review by Mozaffarian and Rimm pooled the evidence and found that eating fish once or twice a week, especially species rich in EPA and DHA, was linked to a 36 per cent lower risk of coronary death. The American Heart Association's 2018 science advisory recommended one to two seafood meals a week, particularly when fish replaces less healthy foods. Hilsa's fat is largely unsaturated and includes those protective omega-3s. What can undo the benefit is the plate around it: deep-fried pieces, the frying oil stirred into a mound of rice, and fried roe at the same meal.

How often can you eat hilsa?

For a healthy adult, one to three times a week in season is a sensible range, with at least some of those meals steamed or in a curry. That comfortably covers the one to two fish meals a week the heart evidence supports. People with raised LDL cholesterol or heart disease can usually keep hilsa too, provided the cooking is light and the rice portion stays at one to one and a half katori. Mozaffarian and Rimm advised that only those eating fish five or more times a week needed to think about limiting species high in mercury. Hilsa is a plankton feeder rather than a large predator, although Indian testing data on its mercury content are thin.

Is hilsa safe in pregnancy and for children?

Yes, well-cooked hilsa is a good fish in pregnancy and for children, with two cautions. The same JAMA review advised women of childbearing age and nursing mothers to eat two seafood servings a week, because DHA supports the developing brain and eyes, while avoiding a few high-mercury species that hilsa is not among. It must be cooked through, never eaten as a lightly cured or half-done preparation. The real hazard for children and older adults is the bones: hilsa has many fine, forked ones. Pick the flesh from the thick back cut or the belly (peti) for a young child, and never hand a toddler a piece to manage alone.

What about hilsa roe, heads and the oil?

Each is edible, but they are not equal. Ilish roe (dim) is dense in fat and protein, and a 2025 Bangladeshi study found DHA at 5.55 to 5.68 per cent of its fatty acids, but roe is also rich in cholesterol and is usually fried. As an occasional treat it is fine; as a regular side it adds up. The head and tail go into kanta chorchori with pumpkin, potato and greens, a thrifty dish that stretches one fish across a family and adds vegetables. The oil left in the frying pan, loved with hot rice, is mostly mustard oil with some fish fat: it has flavour and calories, and a teaspoon is plenty.

Who should go carefully with hilsa?

Four groups should adjust rather than simply enjoy. People with gout or high uric acid should know that oily fish are among the higher-purine foods, so portion and frequency matter; the uric acid diet chart sets out the trade-offs. People managing weight need to count the cooking oil and the extra rice hilsa tempts. Anyone with a fish allergy should avoid it entirely, as hilsa carries the same major allergy protein as other fish. People on blood-thinning medicines who eat much more fish than usual, or who add fish oil capsules, should tell their doctor, because heavy omega-3 intake can add to bleeding tendency.

Hilsa or a fish oil capsule?

Choose the fish if you can. The 2020 Cochrane review of 86 randomised trials with 162,796 participants found that increasing long-chain omega-3, mostly through capsules, had little or no effect on death from any cause. Fish studies look more favourable, perhaps because fish brings protein, vitamin D, selenium and iodine as well, and because it displaces red meat or fried snacks from the plate. A capsule cannot copy that displacement. Capsules have a place when a doctor prescribes them for very high triglycerides, but for a healthy family, a season of well-cooked hilsa alongside other fish is the better investment.

The small-fish problem

Every hilsa lover shares an interest in there still being hilsa. Young fish, sold as khoka ilish or jatka, are caught before they ever spawn, and heavy fishing of them has depleted stocks in several rivers. Governments in India and Bangladesh restrict juvenile catches and fishing in spawning periods, and enforcement varies. From a nutrition point of view, small fish also carry less of the oil that makes hilsa special, as the size-group studies show. Buying larger, legally caught fish, and treating hilsa as a seasonal pleasure rather than a year-round frozen staple, supports both the river and the plate. Food choices and fisheries are more tightly linked than most menus admit.

Where this knowledge becomes a skill

Telling a cardiac patient in Kolkata to stop eating fish would lose the client at the first appointment. Telling them that a steamed ilish twice a week is welcome, but the pool of frying oil and the second helping of rice are not, keeps them listening and protects the heart. That is exactly the judgement NNWA's Cardiovascular Nutrition course trains: reading lipid reports, weighing fats and oils, and adapting heart-healthy advice to regional food. The faculty who teach it, including Neha Mohan Sinha with her hospital background, are listed on the NNWA team page, and fees and EMI are published openly before anyone enrols.

The short version for this ilish season

Hilsa is a genuinely nutritious fish: 18 to 21 per cent protein, a fat content that varies with river and season, and among the most EPA and DHA of any Indian fish. The calories and the harm come mostly from how it is cooked. Steam it, wrap it or simmer it in a jhol for most meals, keep frying short and occasional, and go easy on the pan oil and the rice. One to three meals a week in season suits most healthy adults, including pregnant women and children, as long as the bones are handled with care. People with gout, allergies or blood-thinning medicines should adjust with advice.

Research this article draws on

Ganguly et al. (2018). Nutrigenomic studies on hilsa to evaluate flesh quality attributes and genes associated with fatty acid metabolism from the rivers Hooghly and Padma. Food Research International. CIFRI scientists measured 18 to 21 per cent protein in hilsa from both rivers, with fat near 10 per cent in Hooghly and 8 per cent in Padma fish, and more EPA and DHA in the Hooghly samples.

Mohanty et al. (2016). DHA and EPA Content and Fatty Acid Profile of 39 Food Fishes from India. BioMed Research International. Profiling 39 Indian food fishes, the study named hilsa, oil sardine, threadfin bream and climbing perch as rich sources of DHA and EPA worth promoting in public health nutrition.

De et al. (2019). Nutritional profiling of hilsa (Tenualosa ilisha) of different size groups and sensory evaluation of their adults from different riverine systems. Scientific Reports. Amino acid and fatty acid profiles of hilsa changed with size, and adult fish above 800 g from the Hooghly and Padma differed in composition and taste.

Rana et al. (2026). Impact of Oil Frying on the Physicochemical Properties and Nutritional Quality of Hilsa Fish ( Tenualosa ilisha ). Food Science & Nutrition. Frying hilsa in mustard oil for up to 12 minutes raised fat content, cut EPA by 59 per cent and increased saturated and trans fats; 3 to 6 minutes scored best with tasters.

Mozaffarian and Rimm (2006). Fish Intake, Contaminants, and Human Health. JAMA. One to two fish servings a week, especially oily species, was linked with 36 per cent lower coronary death; the benefits outweighed contaminant risks for adults and women of childbearing age.

Rimm et al. (2018). Seafood Long-Chain n-3 Polyunsaturated Fatty Acids and Cardiovascular Disease: A Science Advisory From the American Heart Association. Circulation. The advisory recommended one to two seafood meals a week to lower the risk of heart failure, coronary heart disease, ischaemic stroke and sudden cardiac death, especially when seafood replaces less healthy foods.

Abdelhamid et al. (2020). Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database of Systematic Reviews. Across 86 trials, mostly of capsules, raising long-chain omega-3 intake had little or no effect on all-cause mortality, which is why food sources are preferred over routine supplements.