JellyFish Facts

Obtaining Your Jellies

Obtaining Your Jellies picture

Obtaining Your Jellies

Now that your aquarium is set up, you need to populate it. Finding a reliable source for jellyfish can be difficult if you are unable to go out and collect your own. You want to be certain that you have chosen the right breed of jellyfish and that you are using a dealer that will protect them until they safely reach you. Choosing a bad dealer can result in obtaining fish that cannot survive in captivity or even in jellies that are damaged or dead when they reach your home. These tiny creatures are quite fragile and must be shipped very carefully.


While you may think that all jellyfish are the same, this is far from true. Just as a Chihuahua has different needs than a Rottweiler, different species of jellyfish are far removed from one another. Here, we will take a look at a few of the most popular breeds of captive jellies.

Upside Down Jellyfish

Upside down jellyfish are perhaps the most common captive breed. Named because of their ability to swim upside down, these jellies are native to the Philippines. Upside down jellies can reach up to eight inches in diameter, which must be considered when you are looking at aquarium sizes and determining how many jellies to purchase. Understand that your fish will need room to swim and breathe without their waste filling the tank faster than your bacteria can eliminate it.

The upside down jellyfish feeds on live plankton that floats near the top of your tank. The fish uses these algae because they are near the light source and can undergo photosynthesis, which gives them the nutrients that your jelly needs. Your jelly will likely depend on these algae for survival.

Moon Jellyfish

The moon jellyfish is yet another popular captive breed. These fish can reach up to twelve inches and therefore require a large aquarium in order to survive. While these jellies can also feed on micro plankton, the most common food source for them is live brine shrimp. These can be easily be found at most pet stores. A moon jelly will require more temperate waters than most jellyfish, and the aquarium temperature for these fish should be set between 55 and 65 degrees Fahrenheit. Because the needs of jellyfish differ so greatly from one species to the next, it is important to only keep one type of jellyfish in each aquarium.

EXPERT TIP: Alex Andon from Jellyfish Art advice - Our moon jellies like water temperature at 77 degrees, not 55 - 65. This makes a big difference for the hobbyist because heating water is a lot cheaper and easier than cooling it. Our desktop tank would be triple the price if we had to have cold water jellies in it. I get a lot of customers calling me who have read the 55 - 65 degree requirement on other sites and are skeptical of my 77-degree jellies. Be sure to stop by Jellyfish Art and check out Alex's Jellyfish Aquarium solutions!

Lagoon Jellyfish

Lagoon jellies are becoming increasingly popular in home aquariums. They are considerably smaller than most captive jellyfish, with some less than an inch in diameter. These jellyfish feed on algae and plankton and are native to bays, harbors, and lagoons. These jellyfish require a stronger light source than most jellies due to the fact that they depend on the ability of the algae within the tank to undergo photosynthesis.

Blue Blubber Jellyfish

The blue blubber jellies are among the most unique jellies available. These fish can arrive in many different colors, ranging from blue and purple to red and even yellow. The unique aspect of these jellies is that they survive largely because of the algae that live inside them. These jellyfish require a very strong light source to keep these internal algae stimulated. They can also enjoy a diet of live brine shrimp in addition to these algae, but never in lieu of it.

Next: Lifespan and Life Cycle

Jellyfish Art is the leader in supplying live jellyfish and their specialized aquariums and products, click here to learn more about Jellyfish Art.

Learn more about Jellyfish, different Jellyfish Species, general Jellyfish Information, Jellyfish Pets and Jellyfish Safety

Written by and Sudarsana Sinha.

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