''Hydractinia'' is a genus of commensal
athecate hydroids
Anthoathecata, or the athecate hydroids, are an order of hydrozoans belonging to the phylum Cnidaria. A profusion of alternate scientific names exists for this long-known, heavily discussed, and spectacular group. It has also been called Gymno ...
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
''Hydractinia echinata'' is a colonial marine hydroid which is often found growing on dead, hermit-crabbed shells of marine gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates w ...
.
Another species, ''H. minoi'', is known to be commensal with
stingfishes of the genus ''
Minous
''Minous'', is a genus of marine ray-finned fishes, it is the only genus in the tribe Minoini, one of the three tribes which are classified within the subfamily Synanceiinae within the family Scorpaenidae, the scorpionfishes and their relatives. ...
''.
Species
References
''Hydractinia''at
World Register of Marine Species
Hydractiniidae
Hydrozoan genera
{{anthoathecata-stub