Acanthaster planci

Crown-of-thorns seastar | Coral-eating Starfish | Coral-feeding Starfish | Giant Thorny Starfish
Acanthaster planci
Acanthaster planci, Aceh, Indonesia, Photo: Graham Edgar
Acanthaster planci
Acanthaster planci, Raja Ampat, Indonesia, Photo: Graham Edgar
Acanthaster planci
Acanthaster planci, Cocos Island, Costa Rica, Photo: Graham Edgar
Acanthaster planci
Acanthaster planci, Kermadec Islands, New Zealand, Photo: Rick Stuart-Smith
Acanthaster planci
Acanthaster planci, Cocos Island, Costa Rica, Photo: Graham Edgar
Acanthaster planci
Acanthaster planci, Cocos Island, Costa Rica, Photo: Graham Edgar
Acanthaster planci
Acanthaster planci, Gulf of Carpentaria, QLD, Photo: Andrew Green
Acanthaster planci
Acanthaster planci, Lord Howe Is, NSW, Photo: Andrew Green
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Acanthaster planci
Acanthaster planci
Acanthaster planci
Acanthaster planci
Acanthaster planci
Acanthaster planci
Acanthaster planci
Acanthaster planci

Distribution

Tropical Eastern Pacific, Tropical Indo-Pacific


Description

Large heavy bodied starfish, with numerous stout arms. Covered with thick sharp spines, which are venomous. Variable colouring. Feeds on hard corals by everting it\'s stomach, and occasionally occurs in plague proportions, devastating the reef.


Information

Max Size: 80 cm

Sea Temperature Range: 19.1-31.1°C

Depth: 0-65m

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.


Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Infrequent (6.5% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Solitary (1 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.


Edit by: Joe Shields