Astropecten polyacanthus, the sand sifting starfish or comb star, is a sea star of the family Astropectinidae. It is the most widespread species in the Astropecten genus, found throughout the Indo-Pacific region. The armspread is up to 20 cm (8 in)
It feeds on detritus and bivalve and gastropod molluscs which it swallows whole.
It is found at depths down to about 185 mt.
Members of the class Asteroidea exhibit both asexual (regeneration and clonal) and sexual (gonochoric) means of reproduction.