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Hydractinia
	Hydractinia altispina
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Hydrozoa
Order:	Anthoathecata
Family:	Hydractiniidae
Genus:	Hydractinia; van Beneden, 1841
Species
	See text
Synonyms
	List Cionistes Wright, 1861; Echinochorium Hassall, 1841; Euhydractinia Broch, 1910; Halorhiza Stechow, 1962; Hydrodendrium Nutting, 1906; Hydronema Stechow, 1921; Nuttingia Stechow, 1909; Podocorella Stechow, 1921; Synhydra Quatrefages, 1843;

Hydractinia is a genus of commensal athecate hydroids which belong to the family Hydractiniidae. Hydractinia species mostly live on hermit-crabbed marine gastropod shells.

One species, Hydractinia echinata, is commonly known as snail fur.^[1] Another species, H. minoi, is known to be commensal with stingfishes of the genus Minous.^[2]

Species

References

^ Kåre Telnes. "Snail Fur - Hydractinia echinata". The Marine Flora and Fauna of Norway. Kåre Telnes. Retrieved 1 April 2022.
^ Eschmeyer, W. N.; Hallacher, L. E.; and Rama-Rao, K. V. (1979). "The scorpionfish genus Minous (Scorpaenidae, Monoinae) including a new species from the Indian Ocean". Proceedings of the California Academy of Sciences. 41 (20): 453–473.

Hydractinia at World Register of Marine Species

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[Telnes-1] Kåre Telnes. "Snail Fur - Hydractinia echinata". The Marine Flora and Fauna of Norway. Kåre Telnes. Retrieved 1 April 2022.

[Eschmeyer1979-2] Eschmeyer, W. N.; Hallacher, L. E.; and Rama-Rao, K. V. (1979). "The scorpionfish genus Minous (Scorpaenidae, Monoinae) including a new species from the Indian Ocean". Proceedings of the California Academy of Sciences. 41 (20): 453–473.

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