Comanthus parvicirrus at North Direction Island. Typical individuals like this can be identified in the field by a combination of features: living position (body within reef, several arms protruding), short combs on pinnules from proximal ones to those far along the arm; and colour pattern (brown arm segments with dark articulations, blueish pinnules). However, this species has other colour combinations and other Comanthus species have the same living position and combed pinnule distribution.
© Anne Hoggett