Chinese trumpetfish in shape to the anal fin which is just under. The pelvic fins are located in the middle of the body and are small, with one basal black spot. The body coloration can be uniform or mottled in a range of grey, brown, or dark green. Some fish are uniformly bright yellow. The rear part of the body is normally black with white dots. Two black spots are present on the tail. The compound set of the long caudal peduncle and the caudal fin is yellowish, whatever the fish coloration. Caudal fin usually has two round black spots, at least
Sergeant major (fish) weighed had a weight of up to . "Abudefduf saxatilis" has 13 dorsal spines, 12 to 13 dorsal soft rays, 2 anal spines, and 10 to 12 anal soft rays. This fish is white with a yellow top. It has 5 vertical stripes which are black. A faint sixth stripe might be present on the caudal peduncle. Adult males have a more bluish coloration and its stripes are less visible. There is a dark spot around its pectoral fin. This fish feed upon the larvae of invertebrates, zooplankton, smaller fish, crustaceans, and various species of algae. It is also known