Its body is compressed laterally with a rounded body profile, and its snout protrudes forwards slightly with a small protrusible (extendable) mouth. Its very characteristic livery leaves no doubt about the identification.
The rest of its body is white, peduncle and caudal fin included. Insertion of yellow-orange areas at the top of the side form a characteristic pyramidal pattern, hence the name of the fish. The anal fin is also yellow-orange.