Spirobranchus corniculatus

Species of fanworm

Spirobranchus corniculatus, commonly referred to as the Indo-Pacific Christmas tree worm, is a species of tube-building annelid fanworms in the family Serpulidae. Belonging to the class Polychaeta, it is recognized for its bristle-like tentacles and the presence of a structure called radioles. It is widely encountered and recognized for its unique resemblance to a conifer and its diverse array of colors. Initially presumed to be part of a species group including Spirobranchus cruciger and Spirobranchus gaymardi, it has been determined to be a singular, morphologically adaptable species inhabiting the Central Indo-Pacific region.

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