all the species that are kept as pets. Provided that they are properly taken care of, their lifespan is usually a couple of years. Flame Jellyfish and Lagoon Jellyfish are also popular among home aquarists. Generally, in a 6 gallon fish tank, you can keep three to four 2 inches Moon Jellyfish. In a 20 gallon fish tank, ten to twelve 2 inches Jellyfish can be kept. However, longer tentacles Jellyfish like Atlantic Sea Nettles are required to be captivated in smaller numbers to avoid tangling.
Jellyfish are breathtakingly attractive creatures and keeping them as a pet in a fish tank can add a touch of class in any humble abode.