No special status Freshwater jellyfish are unpredictable in their appearance within bodies of water. Thus, populations are difficult to predict. Despite this unpredictability, conservation within the United States, and around the world, does not appear to be an issue. Other Comments Craspedacusta sowerbyi possess cnidocytes with nematocysts, otherwise known as stinging cells. Therefore, freshwater jellyfish are unable to produce the painful sting caused by most marine jellyfish.
Freshwater jellyfish are hard to raise in an aquarium.
Information about Craspedacusta sowerbyi is incomplete. Researchers continue to study this organism. References Collins, Allen, Robert Guralnick and David Polly. December 22, 1998. Davis, A. 1998.