This species is typically encountered on outer reef slopes, usually at depths of up to 30 m, either alone or in small groups. Its diet consists of hydroids, crustaceans, polychaetes, and other types of worms.
distinctive characters
This species has a dorsal fin with 12 spines and 21-25 rays, an anal fin with 3 spines and 17-18 rays, a pectoral fin with 14-16 rays, a body depth of 2.1-2.2 times its standard length, and a long snout that is usually more than 3.2 times its standard length, as well as a distinct gape on its mouth.