The Vermilion Biscuit Star (Pentagonaster duebeni) is a very brightly coloured seastar species that is best recognised by its red colouration and plates that are separated by thin white lines. This species belongs to the Goniasteridae seastar family and can be found in temperate/sub tropical waters. This species can be found from the Abrolhos Islands in Western Australia around the southern coast of Australia to Moreton Bay in Queensland. It is also recorded around Tasmania. This species can be found on rocky reefs from 0 – 200 metres in depth. This species can very greatly in its size and colouration around the southern Australia coast.
The Vermilion Biscuit Star (Pentagonaster duebeni) has a maximum arm radius of approximately 7 cm.