Image of Hydractinia symbiolongicarpus Image credits: Wikimedia

Dataset information

Source Salamanca-Díaz et al., 2025
Processed 13 August 2026
Last update 17 August 2026

Metadata

NCBI Taxonomy 13093
Division Invertebrates
Cellular root cellular organisms
Domain Eukaryota
Clade Opisthokonta
Kingdom Metazoa
Clade Eumetazoa
Phylum Cnidaria
Class Hydrozoa
Subclass Hydroidolina
Order Anthoathecata
Suborder Filifera
Family Hydractiniidae
Genus Hydractinia

Hydractinia symbiolongicarpus

Hydractinia symbiolongicarpus is one of the 30 + Hydractinia species known worldwide. This saltwater animal, from here on referred to as Hydractinia, is at the base of the Cnidaria phylum and in many ways, is similar to the freshwater Hydra. In the wild, Hydractinia feed on smaller invertebrates found in the shallow mud, however in laboratory environments they are fed brine shrimp. Hydractinia symbiolongicurpus and its sibling species, Hydractinia echinata, are the two species from the genus Hydractinia on which most work has been published. Wikipedia

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