This thin-bodied fish has a ventral spur and is covered in bony plates.
It moves around by rippling its fins. It swims vertically, head down, as it looks for the planktonic crustaceans that it eats.
It lives near the ocean floor at depths of 0 to 35 m.
Razorfish form groups of 10 to several hundred fish. In case of danger, they hide in the branches of sea fans or coral or in the long spines of hatpin urchins.