Fish

Tarpon

Megalops atlanticus · also called Atlantic tarpon, silver king

Vulnerable ↓ carnivore Coasts & shorelines Ocean Rivers & wetlands

A tarpon is a slab of mirror-bright armour up to two and a half metres long, a coastal fish that can gulp air like a lungfish, live for over sixty years, and — when a hook goes in — hurl its whole body clear of the water in a head-shaking leap. Anglers have called it the silver king for more than a century, and almost every one caught today is released.

Overview

The Atlantic tarpon, Megalops atlanticus, is a large predatory fish of the warm Atlantic on both sides — Virginia to Brazil, Senegal to Angola — in bays, estuaries, mangrove creeks, coastal rivers, and lagoons. It is a carnivore, swallowing mullet, sardines, shrimp, and crabs whole with an upturned mouth. Big females reach 2.5 m and 130 kg, sheathed in large, thick, silver scales.

Air-breathing and leaping

A tarpon’s swim bladder works as a primitive lung, and it rolls at the surface to gulp air, which lets it live in warm, stagnant backwaters — nursery water that keeps out most predators. Hooked, it leaps clear of the water shaking its bony head, which throws the hook so often that anglers “bow to the king”, dropping the rod to keep the line slack.

A strange start, a long life

Like eels and bonefish, a tarpon hatches as a transparent, leaf-shaped leptocephalus larva that drifts in the open ocean before transforming. Adults spawn far offshore on the new and full moon, and the young ride currents back to coastal marshes. Tarpon mature at 7–13 years and can live past 60.

Status

Vulnerable and decreasing. Though barely fished for food (the flesh is bony and oily), the tarpon is slow-growing and long-lived, and it faces loss of the coastal wetlands its young need, netting in parts of West Africa and the Caribbean, boat strikes, and post-release mortality from the intense sport fishery.

Tarpon: common questions

Why do tarpon jump when hooked?

The leaping is a genuine escape response, not a show. A hooked tarpon feels the sudden pull and pain and reacts by accelerating hard and throwing itself clear of the water, shaking its large bony head violently from side to side at the top of the jump. Because the tarpon's mouth is hard and bony, a hook often has only a shallow hold, and the combination of a slack line at the peak of a jump and the head-shaking frequently throws the hook, so anglers lose a large fraction of the tarpon they hook. Experienced anglers bow to the king, dropping the rod tip toward a jumping fish to keep tension off the hook. The jumps also let the fish gulp air and may help dislodge the hook by design.

Can a tarpon really breathe air?

Yes, and it must have access to air in poorly oxygenated water. The tarpon's swim bladder is connected to the gut and lined with lung-like spongy tissue, and the fish periodically rolls at the surface to take a gulp of air into it, absorbing oxygen directly. In well-oxygenated open water tarpon breathe with their gills like any fish and roll only occasionally, but in the warm, stagnant canals, lagoons, and backwaters where young tarpon often live, air breathing is essential, and a tarpon trapped below the surface in such water suffocates. This ability is one reason tarpon can use nursery habitats that exclude most of their predators and competitors.

Are tarpon good to eat?

Not really, which is a large part of why they survive so well as a sport fish. Tarpon flesh is grey, coarse, very bony, and strongly flavoured, and it is not sold in markets in North America or Europe. In parts of the Caribbean, West Africa, and Central America tarpon are eaten, often salted or dried, and the large scales are used in crafts and jewellery, but there is no major food fishery. The result is that almost all tarpon fishing today is catch and release, with anglers prizing the fight, the size, and the leaps rather than the meat, and many fisheries now require that large tarpon are not removed from the water at all.

How big and how old do tarpon get?

Atlantic tarpon commonly run 1.2 to 2 metres and 25 to 80 kilograms, and large females reach about 2.5 metres and 130 kilograms or a little more, with the all-tackle rod-and-reel record around 130 kilograms from West Africa. They are also remarkably long-lived for a fish this size. Age studies using the ear bones show fish in their forties and fifties as fairly normal for big individuals, records verified past 60 years in the wild, and a female tarpon at the Shedd Aquarium in Chicago that lived at least 63 years. Because they mature slowly, at 7 to 13 years, and live so long, tarpon populations rebuild only slowly once reduced.

Sources & further reading

Written by HideShark Editorial Team · reviewed by HideShark Science Desk. Published September 10, 2026. Last updated September 10, 2026.

Quick facts

Scientific name: Megalops atlanticus
Diet: A mid-water and surface predator that eats schooling fish such as mullet, sardines, pinfish, and menhaden, along with shrimp, crabs, and other crustaceans, swallowing prey whole with an upturned mouth and gill rakers rather than cutting teeth
It breathes air: A tarpon has a swim bladder connected to its throat and lined with spongy tissue that works like a primitive lung, and it rolls at the surface to gulp air, which lets it live in warm, low-oxygen backwaters, canals, and stagnant lagoons that would suffocate most large fish, and a tarpon denied access to the surface in such water will die
The silver king: A big Atlantic tarpon reaches 2.5 m and 130 kg or more, is covered in large, thick, mirror-bright scales, and when hooked makes a series of spectacular head-shaking leaps clear of the water, which is why anglers have called it the silver king for over a century
An ancient lineage with a strange larva: Tarpon belong to an old group of fishes and, like eels and bonefish, begin life as a transparent, ribbon-shaped, leaf-like larva called a leptocephalus that drifts in the open ocean for a month or more before shrinking and transforming into a small tarpon
Long-lived and slow to mature: Tarpon do not spawn until around 7 to 13 years old, and they are very long-lived, with rod-and-reel records verified past 60 years and a female in an aquarium that lived to at least 63, so a trophy tarpon may be older than the angler who catches it
Poor eating, great sport: Tarpon flesh is bony, oily, and not considered good to eat, so there is little commercial fishery for them in most of their range, and the modern tarpon fishery is almost entirely catch and release, supporting a large recreational and guiding industry in Florida, Costa Rica, and West Africa
They spawn far offshore by the moon: Atlantic tarpon migrate well out to sea to spawn, timed to the new and full moon in late spring and summer, releasing millions of eggs in open water, and the larvae then ride currents back toward coastal marshes, mangroves, and rivers to grow up
Range: The warm Atlantic on both sides, from Virginia south through the Gulf of Mexico, the Caribbean, and Brazil in the west, and from Senegal to Angola in the east, with strays reaching cooler waters in summer and some passing through the Panama Canal into the eastern Pacific, in coastal seas, bays, estuaries, mangrove creeks, coastal rivers, and lagoons, with juveniles in very shallow, warm, often brackish or nearly fresh backwaters.
Conservation status: Vulnerable ↓ ≈ The Atlantic tarpon is assessed as Vulnerable with a decreasing trend, because although it is not heavily targeted for food, it is slow-growing, late-maturing, and long-lived, which makes it slow to recover from losses, and it faces the loss and degradation of the coastal wetlands, mangroves, and estuaries its young depend on, bycatch and directed netting in parts of West Africa and the Caribbean, boat strikes, and stress and post-release mortality from the intense catch-and-release fishery, with several regional populations thought to have declined in the wild