Leptoscarus vaigiensis (Quoy & Gaimard, 1824)

Base Body Coloration

Leptoscarus vaigiensis, commonly called the marbled parrotfish, has a base body color ranging from brown to green, with darker mottled patterning on the back that fades to yellow or greenish on the ventral side.

Male Coloration

Males have a pale longitudinal stripe along their flanks, and small blue spots across the head, body, dorsal fin and anal fin.

Female Coloration

Females have a mottled pattern of brown and white, with broad bands that radiate out from the eyes on their heads.

Fin Structure

This species has 9 spines and 10 soft rays in its dorsal fin; its anal fin has 3 spines and 9 soft rays, and its pectoral fin has 13 rays.

Dental Morphology

It has distinctive narrow dental plates fused into a parrot-like beak, covered with many small teeth. When its mouth is closed, the teeth of the upper jaw are completely enclosed by the lower jaw.

Maximum Size

The maximum total length this species can reach is 35 centimetres, or 14 inches.

Overall Distribution Range

The marbled parrotfish has a wide distribution across the Indo-Pacific region. Its range stretches from the northern Red Sea, south along the eastern African coast to the Cape of Good Hope, and east through the Indian and Pacific Oceans all the way to Easter Island.

Pacific Distribution Limits

In the Pacific Ocean, its range extends north to Japan and south to Rottnest Island off Western Australia and the Poor Knights Islands of New Zealand.

Atlantic Distribution

In the southeastern Atlantic, this species is found in False Bay, Western Cape, South Africa.

Anti-equatorial Distribution Pattern

Its distribution is largely anti-equatorial: it occurs in both the Northern and Southern Hemispheres, but is rare or absent near the Equator.

Habitat Preferences

The marbled parrotfish inhabits sheltered bays, harbours and lagoons, found among seagrass beds and algal-covered reefs.

Social Structure and Depth Range

It typically lives in small groups, and occurs at depths ranging from 0 to 15 metres, or 0 to 49 feet.

Reproductive Biology

Uniquely among parrotfish, this species is gonochoristic, meaning females never change sex to become males. Spawning takes place in shallow water over flat seagrass beds during the ebbing tide.

Sexual Dimorphism

In addition to being gonochoristic, marbled parrotfish also show less sexual dimorphism than most other parrotfish species.

Adult Diet

Their diet is made up of seagrass and algae.

Larval Habitat Association

The larvae of the marbled parrotfish are associated with drifting algae.