Ilish

Ilish is the Bengali name for the hilsa, an anadromous fish native to the northern Indian Ocean and its rivers. Its oily flesh is central to Bengali cuisine.

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Hilsa fishing: The capture of hilsa in rivers and coastal waters, using nets and seasonal fishing practices. Fishing methods and seasons shape how ilish reaches markets and meals.
Anadromy: A life-history strategy in which fish live mainly at sea but migrate into freshwater to reproduce. Ilish is anadromous, moving from marine feeding grounds into rivers to spawn.
Overfishing: The removal of fish from a population faster than it can replenish itself. High demand for ilish can intensify pressure on migratory stocks.
Bengali cuisine: The culinary traditions of Bengal, spanning Bangladesh and the Indian state of West Bengal. Ilish is a defining ingredient in Bengali cooking on both sides of the border.
Ilish bhapa: A Bengali preparation in which hilsa is steamed with mustard and spices. Steaming preserves the fish’s rich flavor in a signature Bengali dish.
Fish migration: The regular movement of fish between habitats, often linked to feeding, reproduction, or seasonal conditions. Hilsa migration connects coastal waters with inland river reaches.
Bycatch: Non-target animals caught during fishing, including undersized individuals of the target species. Fishing nets can capture juvenile hilsa before they reproduce.
Bengali weddings: Marriage ceremonies and customs practiced by Bengali communities. Fish, including ilish, can feature in wedding gifts and ceremonial food.
Shorshe ilish: A Bengali dish of hilsa cooked in a mustard-based sauce. Mustard’s pungency complements the oily flesh of ilish.
Spawning: The release of eggs and sperm by aquatic animals for external fertilization. Hilsa ascend rivers to reproduce, making spawning grounds central to their life cycle.