Specimen Information

Craspedacusta sowerbyi
Craspedacusta sowerbyi
(freshwater jellyfish)
Coelenterates-Hydrozoans
Exotic

Specimen ID1652433
GroupCoelenterates-Hydrozoans
GenusCraspedacusta
Speciessowerbyi
Common Namefreshwater jellyfish
StateCT
CountyFairfield
LocalityGreen Pond, Sherman, Connecticut, 06784
Mapping AccuracyAccurate
HUC8 NameHousatonic
HUC8 Number01100005
HUC10 NameCandlewood Lake-Housatonic River
HUC10 Number0110000506
HUC12 NameCandlewood Lake
HUC12 Number011000050601
Map
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Collection Day8
Collection Month9
Collection Year2020
Year AccuracyActual
Potential Pathwayhitch hiker with stocked fish | hitch hiker on aquatic plants
Statusestablished
CommentsSwimming around Green Pond's circumference every summer for the past 20 years, I have observed (except for the past 3 years) and twice collected specimens. On Sept. 8, 2020 I counted 250. I have not always observed them in the same place, but it seems most often over the deepest parts of the pond, whichg I estimate to be 20-30 feet deep. That Green Pond is 200 feet above the surrounding man-made (1920s) lake and is spring fed, it is not obvious how the jelly fish arrived at the pond from the Yangtze River. western parts of pond about 1-2 feet below surface. Temperature 78-80 degrees F.
Record TypeNAS sighting report
Freshwater/MarineFreshwater
Number Collected250


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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/20/2021].

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