The black pyramid butterflyfish is a small-sized fish that can reach a maximum length of 18 cm. Its body is compressed laterally with a rounded body profile. The snout is somewhat stretched with a small terminal protractile mouth. The body is black, crossed in its center by a broad white trapezoid band with a yellow top, corresponding to the center of the dorsal fin. The caudal fin is white. Learn more about Brown-and-White Butterflyfish