Fish Identification

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Fish Identification

Other identification tools | SeaLifeBase

Non-fish Identification: Find Species

Family: Hydridae (See list of species below)

Select Ocean (marine/brackish) or Continent (freshwater):

Select Country (optional):

Total number of spines in dorsal and anal fins (optional)

12 species with fin ray counts including ? spines in dorsal and ? in anal fins (see list below)

No picture found Chlorohydra hadleyi []	No picture found Chlorohydra viridissima [Green hydra]	No picture found Hydra americana [White hydra]
No picture found Hydra canadensis [Alberta hydra]	No picture found Hydra cauliculata []	No picture found Hydra hymanae [Jersey hydra]
No picture found Hydra littoralis [Swiftwater hydra]	No picture found Hydra minima []	No picture found Hydra oligactis [Brown hydra]
No picture found Hydra oregona [Oregon hydra]	No picture found Hydra pseudoligactis [False brown hydra]	No picture found Hydra rutgersensis []

12 Species of Family Hydridae
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Sort by: Species Length

Scientific Name	English Name	Distribution
Chlorohydra hadleyi		North America.
Chlorohydra viridissima	Green hydra	North America.
Hydra americana	White hydra	North America.
Hydra canadensis	Alberta hydra	North America.
Hydra cauliculata		North America.
Hydra hymanae	Jersey hydra	North America.
Hydra littoralis	Swiftwater hydra	North America.
Hydra minima		North America.
Hydra oligactis	Brown hydra	North America.
Hydra oregona	Oregon hydra	North America.
Hydra pseudoligactis	False brown hydra	North America.
Hydra rutgersensis		North America.

Other identification tools in SeaLifeBase

Quick Identification

Identification keys

Identification by morphometrics

Identification by pictures:

          If you already know the Family, go to Search SeaLifeBase, select Family and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the family.

          If you already know the Country, go to Search SeaLifeBase, select Country and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the country.

          If you already know the Ecosystem, go to Search SeaLifeBase, select Ecosystem and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the ecosystem.

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