I do have access to several species of jellyfish such as: Moon Jellyfish, Comb Jelly fish, Gooseberry Jellyfish, Sea Nettle Jellyfish, Crystal Jellyfish, Cross Jellyfish, Chrysaora fuscescens, Lion's Mane Jellyfish, Purple-striped Jellyfish, Egg-yolk Jellyfish, Sea Walnut Jellyfish, you name it. I would keep Jellyfish again if my parents let me have a chiller, and another large tank. LOL I do have most of the materials and the know how to make a specialized Jellyfish aquarium.