Mancinella alouina (Roding, 1798)


Uncommon in the Solitary Islands Marine Park. Distributed throughout the Indo-West Pacific region. In Australia recorded from around Shark Bay in Western Australia and the Queensland and northern New South Wales coastline.

Ecological Notes: 

Found in rocky reef areas, usually well camouflaged and not often noticed. Members of this family are carnivorous, feeding mainly on barnacles, bivalves and other molluscs. Specimens pictured photographed at a depth of 10 m.

Additional Notes: 

Distinguished from Thais ambustulatus by the plain brown operculum, the former having a prominent dark striped operculum. Grows to 61 mm. Previously known as Thais alouina.


Atlas of Living Australia website at Accessed 08/11/2018.

The Seashells of New South Wales, Des Beechey, Senior Fellow, Australian Museum, Release 25. Website at Accessed 08/11/2018.