Appearance
Chirodactylus variegatus is a medium-sized fish with a robust, slightly compressed body, the depth of the body is one third of the total length. The body is totally covered with ctenoid scales. It has a rather small head with small eyes and a small, subterminal mouth with thick lips. The overall colour of the body is greyish, darker dorsally and shading to blackish on the flanks and the belly is pale with a reddish tint. The sides are marked with 6-7 pale vertical bands there are similar coloured spots on and around the caudal peduncle. The fins are a vivid red-orange colour. It has thick, short pectoral fins, a continuous dorsal fin and a small anal fin with two spines free of the fin membrane. The caudal fin is forked. The Peruvian morwong reaches a maximum total length of 44 cm (17 in) and weight of 1.0 kg (2.2 lb).

