The largetooth sawfish is a critically endangered elasmobranch whose extraordinary rostrum — lined with 14-23 pairs of ‘rostral teeth’ — is both a sensory organ and a devastating weapon. Once widespread across the globe’s shallow tropical coasts, rivers, and estuaries, sawfish have disappeared from most of their historical range due to targeted fishing, bycatch, and habitat loss. They are among the most endangered marine fish, with populations having declined by more than 90% globally.
About the Sawfish
Pristis pristis
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💡 Fun Facts
01
The rostrum is not a weapon alone — it contains thousands of electroreceptor pores called ampullae of Lorenzini that detect the electrical fields of prey hidden in murky sediment.
02
Largetooth sawfish are euryhaline, meaning they freely move between salt, brackish, and fresh water; juveniles develop in freshwater rivers far from the ocean.
03
Their rostral teeth are not teeth at all but modified placoid scales — the same structures that form shark skin denticles.
04
A single swipe of the saw can stun, wound, or pin multiple fish simultaneously, making it one of the most efficient hunting adaptations in any fish.
05
Sawfish are ovoviviparous — pups develop inside the mother and are born live with soft, flexible rostra covered in a membrane that hardens after birth.
📍 Where to Find This Animal
Habitat Types:
Coastal Shallow Water
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