Az édesvízi medúza (Craspedacusta sowerbii Lankaster, 1880) magyarországi előfordulása | The freshwater jellyfish (Craspedacusta sowerbii Lankester, 1880) in Hungarian waters
An invasive hydromedusa species, the Craspedacusta sowerbii was found in three Hungarian
lakes. The individuals were seen in low density near the shore in two of the lakes and in the pelagical
region in the third one. As the species shows widespread distribution and it is also common in Europe,
this record was expected. In this article some features upon C. sowerbii occurrences are given with
mentioning of some unconfirmed records. Monitoring of Hungarian waters for C. sowerbii for the polip
form is suggested since the reasons of the alteration to meduse form is not well studied; furthermore
the polip form’s occurrence may be less variable