Pondicherry Shark

• Maximum length1.02 m (3.3 ft); type specimen 48 cm
• WeightNever recorded; probably under 10 kg
• LifespanUnknown; small relatives live about 12 years
• Depth rangeInshore, 10–150 m (33–490 ft)
• DietSmall bony fish, squid and crustaceans (inferred)
• IUCN statusCritically Endangered (assessed 2020)

How to recognise a Pondicherry shark

Everything known about the appearance of this shark comes from a handful of preserved specimens, described by Müller and Henle in 1839 from an immature male of about 48 cm (19 in) sent from the French colony of Pondicherry, now Puducherry, on India's east coast. It is a slender grey requiem shark with a moderately long, pointed snout, large round eyes with a nictitating membrane, and a pale stripe along each flank. The fin tips give the first field mark: the pectoral fins, the second dorsal fin and the lower lobe of the tail are tipped with black, while the first dorsal fin is plain.

The teeth give the second and are the source of the name, hemiodon meaning "half-tooth". The upper teeth, in 14–15 rows on each side, are triangular and oblique with serrations on the lower half of each edge that fade to a smooth point; the lower teeth, in 12–14 rows, are narrower, more upright and finely serrated or smooth. The second dorsal fin begins directly above the origin of the anal fin, and the skin is covered in small overlapping denticles with three ridges ending in three to five marginal points.

The problem is that half a dozen small Indo-Pacific whalers look much the same in a fish market and have been mistaken for it, and in 2021 the IUCN concluded that photographs published as a Pondicherry shark from a river in Sri Lanka showed a juvenile bull shark, ruled out by its fin colour, short snout and tall second dorsal fin. Any modern claim needs a specimen or a tissue sample.

How big was the Pondicherry shark?

Small. The largest specimen ever measured is 102 cm (3.3 ft) in total length, and that figure, from Ebert's Sharks of the World, is the maximum the IUCN accepts. The smallest known individual is a female of about 33 cm, which puts the size at birth below 32 cm (12.5 in). No specimen has been weighed; a slender shark of a metre weighs a few kilograms.

Those limits matter because they expose the misidentifications. Fisheries reports from Mumbai described "Pondicherry sharks" of 248 and 299 cm landed between the 1990s and 2002, and gravid females from the Gulf of Mannar; a 3 m animal is almost three times the species' maximum and must have been a larger Carcharhinus, and the Gulf of Mannar claim cannot be verified.

Size at maturity has never been established. The 48 cm type specimen was immature, and the figure of "over 24 inches" (60 cm) that circulates online is a guess. By comparison with the smalltail shark, a similar-sized coastal whaler, maturity at around 70 cm and an age of roughly six years would be reasonable, but that is an inference, not data.

Where Pondicherry sharks lived

The map of this species is a scatter of dots, each one a museum jar. Verified specimens come from Muscat in Oman, from the Indus delta region of Pakistan, from the west and east coasts of India including the type locality at Puducherry, from Borneo (Malaysia and Kalimantan) and from Java in Indonesia, with the historic range extending east to the coast of southern China. Reports from Sri Lanka, Vietnam and the Philippines have never been confirmed.

Within that range it was an inshore shark of the continental and island shelves, taken at depths of 10 to 150 m. The long-repeated story that it entered rivers, including the Hooghly at Kolkata and the Saigon River, rests on nineteenth-century reports that the specialist Garrick could not verify when he revised the genus in 1985; the Indus delta, where the species occurred in the 1950s and 1960s, is the only place where a link to brackish water is plausible.

Where, if anywhere, it survives today is unknown. Dedicated searches of fish landings in Pakistan since the early 1980s, in India and the Andaman Islands, in Oman and the Gulf, in Thailand, Borneo, eastern Indonesia and southern China have all come up empty, and no DNA sample from the region's shark and fin trade has ever matched it.

What Pondicherry sharks ate

No stomach of a Pondicherry shark has ever been analysed and published, so the diet has to be inferred from the animal's build and from its relatives. A metre-long whaler with a pointed snout, large eyes and narrow, cutting upper teeth is a hunter of small, fast prey in shallow, turbid water: schooling bony fish such as anchovies, sardines and small croakers, squid and cuttlefish, and shrimp and crabs from the bottom. That is the menu of the spadenose shark and the other small coastal carcharhinids that shared its range.

The serrated bases and smooth tips of the upper teeth suggest a bite that pierced and held rather than sawed, consistent with a fish-eater that swallowed prey whole or in a few pieces. Like every requiem shark it would have found that prey by smell, by the lateral line and by the electroreceptive ampullae of Lorenzini on the snout.

Descriptions elsewhere of the species as a "great hunter" that slaps its tail to warn rivals are invention; no one has watched a living Pondicherry shark feed. The honest summary is that it ate what small inshore sharks eat, and that the small inshore fish it depended on have themselves been fished down across the Indian Ocean.

Behaviour and adaptations

Nothing about the living animal was ever recorded. The museum specimens were preserved by collectors, not observed by biologists, and no fisher who handled the species left notes on it. What can be said comes from anatomy and from the habits of its genus.

A small, slender Carcharhinus of the inner shelf is an active, continuously swimming shark that must keep water flowing over its gills; it does not rest on the bottom as a catshark does. Large eyes with a nictitating membrane, the third eyelid that slides across to protect the eye at the moment of a strike, point to a shark that hunted by sight as well as smell in water with at least some light, which fits the 10–150 m depth range. The pale flank stripe and dark fin tips are shared with several small whalers and may serve as signals within a school; many of the smaller requiem sharks travel in loose groups sorted by size and sex.

Whether the Pondicherry shark migrated, tolerated brackish water or gathered to breed in particular bays are questions that could once have been answered by a season's work at any Indian landing site and now may never be. How this species used the standard requiem-shark equipment is lost, unless a living population is found.

Reproduction and lifespan

Every species in the genus Carcharhinus whose reproduction is known is viviparous with a yolk-sac placenta, so the Pondicherry shark was almost certainly the same: the embryo exhausts its yolk, the empty sac fuses with the wall of the uterus, and the mother nourishes the pup directly until birth. Beyond that, nothing. No pregnant female has been examined, so litter size, gestation, birth season and nursery areas are all unknown. The "nine months to two years" of pregnancy quoted on other websites is a generic requiem-shark figure transplanted onto a species no one has watched.

Size at birth is the one hard number: a free-swimming female of 33 cm sets it below 32 cm, which is typical for a small whaler. A shark of a metre would bear a handful of pups, perhaps two to six, once a year or every other year, in shallow water; that is the pattern of other small carcharhinids, but it is an analogy.

The IUCN made that analogy explicit when it needed a generation length for its 2020 assessment. Lacking any age data for the Pondicherry shark, it borrowed the smalltail shark's values of maturity at six years and a maximum age of twelve, giving a generation length of about nine years. Under that clock the species has passed through six or seven generations since its last verified record in 1960, long enough for a small population to vanish entirely (see how long sharks live).

Is the Pondicherry shark dangerous to people?

No, on every count. It reaches a metre in length and has a mouth sized for anchovies; it has never been recorded biting anyone, and the SharkSider database contains no incident attributed to it. A species that survey teams have failed to find in sixty years is not going to meet a swimmer. The Indian attack record is dominated by bull sharks and, in the past, by larger whalers in river mouths, not by anything this size.

The danger runs entirely the other way. Small coastal sharks in South and South-East Asia are caught in gillnets, trawls, traps and hand-lines by tens of thousands of boats and sold for meat and fins, with no species-level sorting. The most useful thing a visitor to an Indian or Indonesian fish market can do for the species is photograph any small grey shark with black-tipped pectorals, a plain first dorsal fin and a long snout, keep a fin clip on ice and contact a university or the IUCN Shark Specialist Group; a verified specimen would be the first since 1960.

The SharkSider database has no incident attributed to this species. The database draws on the International Shark Attack File, the Global Shark Attack File and verified local reports, and is updated weekly.

Conservation status: Critically Endangered, possibly extinct

The IUCN Red List assessed the Pondicherry shark as Critically Endangered in September 2020, published in 2021, under criterion C2a(i): fewer than 250 mature individuals are assumed to survive, with no subpopulation larger than fifty. The assessors also ran the formal models used to decide whether a species should be flagged as Possibly Extinct. The threats model, weighing sixty years of intensive, largely unregulated coastal fishing across the whole range, put the probability of extinction at 0.81; the records-and-surveys model, allowing for how easily the species could be overlooked or misidentified, put it at 0.12; the weighted average of 0.44–0.45 fell just short of the 0.5 threshold, so the tag was withheld.

The cause is not mysterious. Shark fishing in India doubled in the 1970s as the fleet mechanised, and the small, resilient whalers that make up the bulk of inshore catches, the spadenose shark and the various "blacktips", have since declined or collapsed on both coasts. India alone has more than 11,000 trawlers and over 13,000 gillnetters on its west coast; Pakistan fields around 14,000 vessels. A metre-long shark of the inner shelf had no refuge from that effort.

Legal protection is thin. India lists the species in Schedule I of its Wildlife (Protection) Act of 1972, the same tier as the tiger, which makes catching or selling it an offence there; no other country in its range protects it by name. Since 2023 it has been on CITES Appendix II with the rest of the requiem shark family, though a permit system means little for a shark nobody can find; it is not on CMS. The global conservation NGO Re:wild placed it on its "most wanted" list of lost species. Its story is the extreme end of the trend described on our page on why sharks are endangered.

Similar species and close relatives

The Pondicherry shark belongs to one of the largest genera of sharks, Carcharhinus, and its nearest look-alikes are the other small whalers of the northern Indian Ocean and the Sunda shelf. The smoothtooth blacktip of the Arabian Sea was itself known only from museum specimens until it was found in Kuwaiti fish markets in 2008, a precedent that keeps hope alive for its cousin. The whitecheek shark and the hardnose shark are common metre-long species of the same coasts with plain or lightly marked fins; the blackspot shark carries a single black blotch on the second dorsal fin. The Borneo shark, rediscovered in Sabah in 2004 after decades without a record, is the closest parallel in size and history.

Confusion with larger species has done real damage to the record. Juvenile bull sharks in rivers have been reported as Pondicherry sharks in Sri Lanka, and adult sharks of 2.5–3 m landed in Mumbai were recorded under the name. The true river sharks, the Ganges shark and the speartooth shark of the genus Glyphis, are stockier, small-eyed animals that share the Pondicherry shark's rarity but not its genus.

• Smoothtooth Blacktip Sharkspecies profile
• Borneo Sharkspecies profile
• Whitecheek Sharkspecies profile
• Hardnose Sharkspecies profile
• Blackspot Sharkspecies profile
• Ganges Sharkspecies profile

Written and reviewed by

SharkSider Editorial Team

A small team focused on researching sharks and making marine biology easy to understand. Every page is reviewed against current species records and the SharkSider attack database, and updated when new incidents or research appear.

Published August 22, 2022 · Last updated September 22, 2026 · No incident attributed to this species in the SharkSider attack database, which is updated weekly.