The Starfish of Hong Kong, Part 5

Pentaceraster chinensis (no English common name)

Pentaceraster regulus – a relative of P. chinensis. Image by Bernard Dupont cc-by-4.0

A tropical starfish know from several locations including Hainan.

Luzon Sea Star (Echinaster luzonicus)

Echinaster luzonicus from Pulau Tioman (Malaysia)
Author Ron Yeo, cc-by-nc-sa.

The Luzon sea star is prone to shed its arms, which then regenerate into new individuals. It is normally six-armed but often quite asymmetrical in appearance, because of it has a habit of shedding arms. Its colouring ranges from red to dark brown. It is found in the tropical and sub-tropical western Indo-Pacific region, ranging from Madagascar and the east coast of Africa to Northern Australia, Indonesia and the Philippines. It is found on both reef crests and in the intertidal zone where it feeds on bacterial and algal films that it extracts from the sediment. By shedding its arms for regeneration the species can reproduce asexually. The shed arm regenerates, growing a new disc and further arms.  Up to 65 cm in diameter.

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hkmarinelife

My PhD was about Antarctic deep-sea ecology and biodiversity, but I am passionate about southern China’s rich marine (and terrestrial) environments. This blog is a collection of facts, news and articles about Hong Kong's diverse marine environment.

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