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Asthenosoma varium

Grube, 1866

Fire Urchin

Classification
Identification
Biology
Distribution
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Classification ${MSG_BIOLOGY_LISTE_CATEGORIES}$

Latin name :	Asthenosoma varium (Grube, 1866)
Synonyms :
Classification :	Echinoidea [ Leske, 1778 ] ( Urchins )

Name :	Oursin t?te d'épingle
Name :	Fire Urchin Fire Urchin, Pinhead Sea Urchin

Identification ${MSG_BIOLOGY_LISTE_CATEGORIES}$

Main identification characters

Family Echinothuriidae. Size : up to 170 milimeters in diameter(test only). Nocturnal. Walks on spines and/or tube feet. Extremely toxic avoid contact with sharp spines. Has monocyclic apical disc, flexible rather than rigid test, and trigeminate ambulacra. Has shallow buccal notches. Its aboral spines are covered in a thick fleshy sac containing toxins.

Possible confusions

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Biology ${MSG_BIOLOGY_LISTE_CATEGORIES}$

Feed

Omnivore - takes most foods

Cycle of life / Reproduction

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Interaction with other species

Sometimes has commensal shrimp (allopontonia iaini) and the snail(Leutzenia Asthenosomae).

Distribution ${MSG_BIOLOGY_LISTE_CATEGORIES}$

Habitat