The familiar 'jellyfish' (the 'medusa' stage) is only a part of the life cycle of Aurelia, which is seemingly rather complex for such primitive, simple creatures. There is debate about the taxonomy of the genus Aurelia, but we consider it a pretty cosmopolitan group of closely-related populations. Many aquarium jelly tanks are more correctly referred to as pseudokreisels as they 'borrow' elements from the 'true' kreisel design but modified for better viewing.Īurelia aurita is a species of scyphozoan ('true') jellyfish with a more or less worldwide distribution. The aim is to produce a gentle, flowing water motion in which the delicate jellies and their food can be suspended.
Success with keeping jellies was due to the development of the kreisel tank (from the German for ‘merry-go-round’), which was originally designed to keep gelatinous planktonic animals alive on research ships and in laboratories. However, pioneering work in the early 1990s at California’s Monterey Bay Aquarium, along with data gathered in Japanese aquariums, succeeded in maintaining a variety of species, starting with the Moon jelly (Aurelia aurita) which is still the most common jellyfish in captivity. Until recently it was thought impossible to keep pelagic (open ocean) jellyfish for any length of time in captivity - standard aquarium conditions proving totally unsuitable. Keeping jellyfish is a relatively new branch of aquarium science.
They remain, however, a relatively common sight in public aquaria and, with some commercially available systems now appearing, how viable do they now seem for domestic tanks? However, this idea is never sustained and jellies have failed to become as popular as predicted. David Wolfenden wonders if jellyfish are about to become a home hobby favourite.Įvery now and then, a fair number of hobbyists become interested in keeping jellyfish at home. See the seller's listing for full details.Complicated life cycles ultimately create these simple but beautiful sea creatures. If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging isĪpplicable).
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