Narrow sawfish
A rare ray with a toothed snout found in Indo-Pacific waters.
The narrow sawfish is a cartilaginous fish distinguished by its long, blade-like snout lined with teeth. It inhabits coastal and estuarine waters across the Indo-West Pacific. Heavy fishing pressure and habitat loss have caused severe population declines, leading to a critically endangered status.
- Only living member of the genus Anoxypristis.
- Population declined over 80% between 2004 and 2022.
- Uses electroreception to locate prey in sediment.
- Listed as Critically Endangered by IUCN in 2023.
- Rostrum teeth are covered by membrane at birth.
What it is
This species belongs to the superorder Batoidea, which includes rays and skates. It possesses a shark-like body but features a distinctive flattened head extended into a long, narrow rostrum. This blade-like snout carries sharp, transverse teeth used for hunting. Adults reach lengths of up to 3.5 metres. The upper body appears greyish, while the underside and fins are pale grey. The rostrum itself is grey with white teeth, sometimes showing a chocolate-brown base. Young fish have smooth skin, whereas older individuals develop sparse dermal denticles.
Where it lives
Historically, this fish occupied a vast area of the Indo-Pacific Ocean. Its range extended from the Persian Gulf and Arabian Sea to Somalia in the west. In the east, it reached southern Japan, China, and down to northern Australia. Today, confirmed populations remain only in the eastern Arabian Sea, parts of South Asia, Australia, and Papua New Guinea. It likely vanished from Vietnamese waters due to fishing and development. The species prefers soft substrates like sand or mud and avoids rocky reefs. It tolerates varying salinity levels, moving between marine and estuarine environments.
How it lives
The narrow sawfish feeds on small fish, squid, crabs, and shrimp. It uses its toothed snout to thrash side-to-side, stirring up sediment to reveal hidden prey or stunning schooling fish. Thousands of electroreception organs on its head help detect the electric fields of victims. Larger adults and females tend to live offshore, while juveniles stay inshore. Natural predators include hammerhead sharks, bull sharks, copper sharks, and saltwater crocodiles. The animal is generally docile towards humans but may flail its head defensively if trapped in nets, posing an injury risk.
Breeding and life cycle
Reproduction involves internal fertilization. Embryos develop in the oviduct, nourished by a yolk sac. The gestation period lasts approximately five months. Litters vary from six to twenty-three pups, averaging twelve. Newborns measure between 43 and 61 centimetres. Their rostral teeth are covered by a membrane at birth to protect the mother during delivery. Males reach full maturity at about 2.4 metres, while females mature fully at roughly 4.7 metres. Theoretical lifespan estimates suggest they may live up to 27 years.
Fish and people
Commercial fisheries pose the greatest threat to this species. Fishermen target it for high-value fins and trophy rostrums. It also suffers heavily as bycatch in net fisheries, particularly nylon nets from which escape is difficult. Ghost nets further endanger pregnant females and juveniles. Coastal development and mining degrade its critical habitat through pollution and destruction. Although listed as a no-take species in Australia and India, enforcement remains inconsistent. International trade is banned under CITES Appendix 1.
Status and threats
The International Union for Conservation of Nature classified this species as Critically Endangered in 2023. Assessments indicate a global population drop of over eighty percent within three generations. Previous listings fluctuated between Endangered and Critically Endangered based on available data. The US National Marine Fisheries Service listed it as endangered in 2014 but could not designate critical habitat outside US jurisdiction. No recovery plan was developed due to enforcement limitations. Current total population numbers remain unknown.
Questions people ask about Narrow sawfish
How large does the narrow sawfish grow?
Adults reach a maximum length of about 3.5 metres. Unconfirmed reports suggest larger sizes, but these lack verification. Pups are born much smaller, measuring between 43 and 61 centimetres.
Is the narrow sawfish dangerous to humans?
It is generally docile and does not view humans as prey. However, if caught in nets or stressed, it may thrash its toothed snout violently. This defensive action can cause serious injury to nearby people.
Why is the narrow sawfish critically endangered?
Overfishing for fins and trophies is the primary threat. It also suffers high mortality as bycatch in commercial nets. Habitat loss from coastal development and pollution further reduces its remaining populations significantly.
Good reading and sources
- Knifetooth sawfish on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Knifetooth sawfish", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.
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