- First dorsal-fin height more than 3 times height of second-dorsal fin
- Notch on posterior margin of anal fin relatively acute (90°)
- Interdorsal ridge absent
- Snout very broad and broadly rounded; preoral length less than internarial length
- Upper and lower teeth broadly triangular, with erect to slightly oblique cusps with serrated edges
- Usually 11 rows of teeth on each side of lower jaw
Dorsal surfaces grey; a faint white stripe along sides of body. Fins plain in adults, with dusky tips in juveniles. Ventral surfaces almost white.
Maximum size up to 280 cm TL; birth size 60–72 cm TL.
Widespread in the eastern Atlantic and Indo-west Pacific, from south eastern Africa to Papua New Guinea.
A mostly inshore species. Found from the surface to at least 100 meters depth, usually near the bottom.
Feeds primarily on small bony fish, but also sharks, rays, cephalopods and molluscs. Adults move greater distances while juveniles remain relatively localised. Length at maturity is 198–223 cm TL and 195–210 cm TL for females and males respectively.. Reproductive mode is viviparous with yolk-sac placenta. Females give birth to 6–13 pups after a ~12 month gestation; birth occurs in November or December in northern Australian populations.
Caught occasionally by shark longline and tangle net fisheries. Utilised for its fins (high value in adults), meat, skin and cartilage.