Smalltooth sawfish
Critically endangered Atlantic sawfish with a toothed rostrum.
The smalltooth sawfish is a large ray found in shallow Atlantic coastal waters. It uses its toothed snout to sense and strike prey. Listed as critically endangered, it has vanished from most of its historic range due to fishing and habitat loss.
- Uses rostrum to sense electric fields and strike prey
- Only sawfish species bred successfully in captivity
- Capable of parthenogenesis in wild populations
- Critically endangered with reduced historical range
- Diet consists mainly of fish rather than crustaceans
What it is
The smalltooth sawfish is a large member of the ray family Pristidae. It possesses a long, narrow rostrum lined with twenty to thirty-two teeth on each side. These structures are modified scales called dermal denticles rather than true teeth. The body is brownish-grey or blackish above with a white underside. Adults can reach five and a half metres in length and weigh up to three hundred and fifty kilograms. Its dorsal fin starts roughly above the pelvic fins, distinguishing it from similar species.
Where it lives
This species inhabits tropical and subtropical zones of the Atlantic Ocean, including the Caribbean Sea and Gulf of Mexico. It prefers shallow coastal areas, estuaries, and mangrove habitats with soft muddy or sandy bottoms. Juveniles may travel far up rivers during high salinity periods. While adults stay mostly in water less than eight metres deep, they can venture offshore to depths of one hundred and twenty-two metres. The lower temperature limit for survival is sixteen to eighteen degrees Celsius.
How it lives
Smalltooth sawfish use their rostrum for both sensing and capturing food. Thousands of sensory organs on the snout detect electric fields from prey, allowing them to hunt in low visibility. They are generalist fish eaters, though they also consume crustaceans and molluscs. When attacking shoals, they strike their saw rapidly from side to side to stun multiple victims. This unique dual use of the rostrum for detection and manipulation is rare among jawed fish.
Breeding and life cycle
Reproduction involves internal fertilisation, with males using claspers to transfer sperm. Courtship often includes biting of the pectoral fins. The species is ovoviviparous, meaning eggs hatch inside the uterus and young develop on a yolk sac. Litters may contain up to twenty pups, with a reproductive cycle likely every two years. Rarely, females reproduce via parthenogenesis when mates are scarce, a trait observed in wild Florida populations.
Fish and people
The smalltooth sawfish is critically endangered due to entanglement in nets and demand for fins. It has disappeared from much of its historical range, surviving certainly in only a few countries such as the United States and Bahamas. In Florida, the population is stabilising within the Everglades. It is the only sawfish species bred successfully in captivity, with small numbers held in public aquariums for conservation and study.
Status and threats
Listed as critically endangered by the IUCN, this species faces severe threats from overfishing and habitat loss. It survives in less than twenty per cent of its original range. In the United States, it is protected under the Endangered Species Act. An unusual mortality event causing spinning behaviour was reported in Florida in early 2024, prompting rescue efforts. International trade is banned under CITES Appendix I.
Questions people ask about Smalltooth sawfish
What does the smalltooth sawfish eat?
Despite earlier beliefs, molecular studies show that smalltooth sawfish are primarily generalist fish eaters. Their diet consists mostly of various fish species, with crustaceans and molluscs making up a smaller portion of their intake.
How does the sawfish use its rostrum?
The rostrum serves two main functions. It contains sensory organs that detect electric fields from prey, helping the fish locate targets in murky water. It is also used physically to strike, stun, and pin down prey items during feeding.
Is the smalltooth sawfish dangerous to humans?
Sawfish are not considered harmful to humans unless they feel threatened. Their saw is primarily a tool for feeding and defence against predators like sharks. They may strike if provoked, but unprovoked attacks are not typical behaviour.
Where can smalltooth sawfish be found today?
They are now limited to parts of the tropical and subtropical Atlantic. Certain populations survive in the United States, particularly Florida, as well as the Bahamas, Cuba, Belize, Honduras, and Sierra Leone. They have vanished from many former habitats.
Good reading and sources
- Smalltooth sawfish on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Smalltooth 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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