Pentagonaster pulchellus

Pentagonaster pulchellus
Pentagonaster pulchellus
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Asteroidea
Order: Valvatida
Family: Goniasteridae
Subfamily: Pentagonasterinae
Genus: Pentagonaster
Species: Pentagonaster pulchellus
Gray, 1840[1]

Pentagonaster pulchellus, commonly known as the biscuit star is a species of starfish found in New Zealand, where it is common in Cook Strait and around the South Island. Also recorded from the Chatham Islands and from the Campbell Plateau down to the Snares Islands.

Description and habitat

The dorsal surface of the biscuit star is studded with hard smooth plates, which enlarge along the margins and especially at the ends of the five arms. Colouring is variable, usually red or orange, brown, or a silvery purple. The ventral side is a mesh of white over light grey, with yellow tube feet. Frequents seaweed beds, rocky and muddy bottoms from low intertidal down to 300m.

References

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