is a species of the class Hydrozoa (Hydralike Animals) in the family Tiaropsidae and order Leptothecatae (Thecate Hydroids).
Tiaropsidium atlanticum
Tiaropsidium japonicum
Tiaropsidium kelsei
Tiaropsidium kelseyi
Tiaropsidium mediterraneum
Tiaropsidium multicirrata
Tiaropsidium roseum