The extremity of the body corresponds to the triangular rostrum of the animal, which are positioned on each side the pedunculated eyes.

But generally, the observed animals have longitudinal stripes which the thickness, the number and the tint varies.

[7] Allogalathea elegans lives in the tropical waters of the Indo-Pacific area, Red Sea included.

[8] They can be found from the eastern coast of Africa to the Fiji Islands and from Japan to Southern Australia.

[10] Allogalathea elegans is a commensal species living in association with crinoids in which it gets protection and an ideal support for its feeding.

[3] They take advantage of their crinoid host who has the same diet and who always positions in the best catchment areas for the plankton to feed.

[15] When the need and opportunity to mate comes around, Allogalathea elegans participate in precopulatory rituals involving various sensory cues.