CreatureData

Freshwater polyp

Craspedacusta sowerbii Lankester, 1880

Status not recordedjellyfish and corals

The freshwater polyp (Craspedacusta sowerbii) is a species in the family Olindiidae, order Limnomedusae.

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Quick facts about the freshwater polyp

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the freshwater polyp live?

Not recorded

Where has it been introduced?

The Global Register of Introduced and Invasive Species lists the freshwater polyp as introduced in 21 countries, and flagged as invasive in 4 of them.

  1. Italyinvasive
  2. Mexicoinvasive
  3. Russiainvasive
  4. Swedeninvasive
  5. Austria
  6. Belarus
  7. Canada
  8. Chile
  9. Czechia
  10. France
  11. Germany
  12. Ireland
  13. Japan
  14. Lithuania
  15. New Zealand
  16. Poland
  17. Portugal
  18. Serbia
  19. South Africa
  20. Ukraine
  21. United States

Introduced means brought by people and now present; invasive means the country's checklist records an impact. A species can be native to one part of a country and introduced in another. Source: Global Register of Introduced and Invasive Species (CC BY 4.0).

Is the freshwater polyp endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the freshwater polyp classified?

  1. kingdomAnimalia
  2. phylumCnidaria
  3. classHydrozoa
  4. orderLimnomedusae
  5. familyOlindiidae
  6. genusCraspedacusta
  7. SpeciesCraspedacusta sowerbii Lankester, 1880

Synonyms Craspedacusta kawaii, Craspedacusta kuoi, Craspedacusta sowerbii yongkangensis, Craspedacusta sowerbyi, Limnocodium kawaii, Limnocodium victoria, Microhydra germanica, Microhydra ryderi

Other names and names in other languages (22)
  • Common freshwater jellyfishEnglish
  • Fresh-water jellyfishEnglish
  • Freshwater jellyfishEnglish
  • Regent's Park medusaEnglish
  • قنديل البحر المياه العذبة الشائعArabic
  • medúzka sladkovodníCzech
  • ZwergpolypGerman
  • lammikkomeduusaFinnish
  • Méduse d’eau douceFrench
  • Medusa d'acqua dolceItalian
  • マミズクラゲJapanese
  • 소워비꽃모자해파리Korean
  • ZoetwaterkwalDutch
  • hederyka RyderaPolish
  • Água-viva-de-água-docePortuguese
  • Пресноводная медузаRussian
  • medúzka sladkovodnáSlovak
  • kinesisk sötvattensmanetSwedish
  • SüßwassermeduseGerman
  • SüßwasserqualleGerman
  • Idromedusa d'acqua dolceItalian
  • zoetwaterkwalletjeDutch

Catalogue of Life

Relatives of the freshwater polyp

Other species in the same genus Craspedacusta.

CompareFreshwater polyp vs Craspedacusta brevinemaFreshwater polyp vs Craspedacusta chuxiongensisFreshwater polyp vs Craspedacusta hangzhouensisFreshwater polyp vs Craspedacusta iseanum

Common questions

Answered only where our data holds the answer.

Is the freshwater polyp an invasive species?

In some places. The Global Register of Introduced and Invasive Species flags the freshwater polyp as invasive in 4 countries: Italy, Mexico, Russia and Sweden. It lists it as introduced in 21 in all.

What kind of animal is the freshwater polyp?

The freshwater polyp (Craspedacusta sowerbii) belongs to the family Olindiidae in the order Limnomedusae.

Sources and how to cite this page

Data as of 2026-11-14. How this page is put together.

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APA

CreatureData. (2026). Freshwater polyp (Craspedacusta sowerbii). Retrieved from https://creaturedata.com/animals/freshwater-polyp

MLA

“Freshwater polyp (Craspedacusta sowerbii).” CreatureData, 2026, https://creaturedata.com/animals/freshwater-polyp.

BibTeX
@misc{freshwater_polyp_2026,
  title = {Freshwater polyp (Craspedacusta sowerbii)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/freshwater-polyp},
  note = {Data as of 2026-11-14}
}