Protoreaster is a genus of sea stars in the family Oreasteridae from the Indo-Pacific. They are sometimes seen in the marine aquarium trade.

Protoreaster lincki in Ouwehands Dierenpark.jpg
Protoreaster linckii
Scientific classification e
Kingdom: Animalia
Phylum: Echinodermata
Class: Asteroidea
Order: Valvatida
Family: Oreasteridae
Genus: Protoreaster
Döderlein, 1916[1]

See text.


The following species are in the genus:[1]

Image Scientific name Common name Distribution
  Protoreaster linckii (Blainville, 1830) Red-knobbed starfish Indian ocean
  Protoreaster nodosus (Linnaeus, 1758) Chocolate chip sea star Pacific ocean
  Protoreaster nodulosus (Perrier, 1875) Knobbly seastar North Western Australia


  • Ducarme, Frédéric (2022). "How to assess the absence of a species? A revision of the geographical range of the horned sea star, Protoreaster nodosus (Echinodermata; Asteroidea)". Frontiers of Biogeography. 14 (3). doi:10.21425/F5FBG56187.


  1. ^ a b C.L. Mah (2010). "Asteroidea taxon details for Protoreaster Döderlein, 1916". World Asteroidea Database. Retrieved June 29, 2011.