Hydrozoa |
Anthoathecata |
Hydractiniidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Demersal; depth range 144 - 167 m (Ref. 7479). Boreal
Northwest Pacific: Alaska.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Colony erect and shrub-like branched, basally calcified and white; distal skeleton chitinous and brown, perisarc forms chitinous scales. Polyps with mostly two, sometimes three to five thick tentacles.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Reproduction by fixed cryptomedusoids.
Miglietta, M.P. 2006 Hydractinia antoniisp. nov.: a new, partially calcified hydractiniid (Cnidaria: Hydrozoa: Hydractiniidae) from Alaska. Journal of the Marine Biological Association of the United Kingdom 86:993-996. (Ref. 7479)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models