''Meridiastra gunnii'' is an Australian species of

sea star Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, ophiuroids, which are correctly referred to ...

. It has six arms and can be any colour. Molecular evidence indicated that there were genetically divergent eastern and western forms of what is currently referred to as ''M. gunnii'' in southern Australia, and that a taxonomic revision was necessary. Further studies have shown that it can be conspecific with ''Patiriella brevispina''.P.M O'Loughlin et al., A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea). Memoirs of Museum Victoria 60(2): 181–195 (2003)

References

Asterinidae Starfish described in 1840 {{Asteroidea-stub