Appearance
Aulostomus maculatus is closely related to cornetfish. This species can be a bit more than 36 inches (91 cm) long and have greatly elongated and compressed bodies, with a compressed head which has with small jaws at the front end of their long, tubular snouts. There is a distinct barbel on the chin positioned at the tip of at the lower jaw. The dorsal and anal fins are positioned posteriorally. The dorsal fin has 8-12 well-spaced and isolated spines in front of it and has 12 spines and 12-25 soft rays. The anal fin has 21-25 soft rays while the caudal fin is rounded. The most commonly encountered color of A. maculatus is mottled brown to reddish brown with irregular black or brown spots. They may also be blue-gray, bright yellow or green and this species has the ability to change its color to camouflage itself.

