Clown Wrasse

Interesting Info

• The Clown Wrasse occurs in Australian waters from Ningaloo Reef and the Dampier Archipelago (Western Australia), across the Timor Sea to Ashmore Reef, and also along the east coast from Cape Melville (Queensland) south to Bermagui (New South Wales), including Lord Howe Island, Norfolk Island, and Cocos (Keeling) and Christmas Islands.
• Globally, it is widespread in the tropical Indo-Pacific—from Christmas and Cocos–Keeling Islands east to the Tuamotu and Society Islands, north to southern Japan and Hawaii.
• Juveniles are bright orange-red with five white saddles outlined in black, while males (terminal phase) are greenish-brown with blue spots, a pale green bar behind the pectoral fin, and a yellow tail.
• The striking colouration and size shift from juvenile to adult make it one of the most dramatic “before-and-after” transformations seen among wrasses.
• It is a protogynous hermaphrodite: individuals start life as females and may later transition to males, which dominate territories and harems.
• Their diet consists of benthic invertebrates such as crabs, molluscs, tunicates, and foraminiferans, which they pick from rubble, sand, and coral areas.
• They are solitary foragers during the day, often seen flipping rubble or nudging corals to uncover hidden prey.
• They inhabit reef flats, lagoons, and seaward reefs—typically in areas with mixed sand, rubble, and coral, down to around 50 m depth.
• Divers and snorkellers frequently spot them around the Solitary Islands and northern Great Barrier Reef, with juveniles often hiding in crevices and adults roaming open reef zones.
• They play an ecological role by controlling invertebrate populations and contributing to reef substrate turnover with their foraging behaviour.