A jellyfish aquarium can be recommended for those who are experienced in maintaining saltwater aquariums and are prepared to provide the specific care and environment that jellyfish require. Jellyfish are delicate creatures that need a specialized tank with proper water flow, temperature, and filtration. Additionally, jellyfish aquariums can be expensive to set up and maintain. It's important to thoroughly research and understand the needs of jellyfish before deciding to keep them in an aquarium. **

It is generally not recommended to keep jellyfish in a home aquarium as they have specific care requirements that can be challenging to meet. Jellyfish need a specialized tank with a constant flow of water to prevent them from getting stuck in corners and to ensure proper oxygenation. Additionally, some species of jellyfish have venomous stingers that can be harmful to humans and other tank inhabitants. It is best to leave jellyfish keeping to professionals or visit public aquariums to observe them in a safe environment. **

One can buy jellyfish and an aquarium by visiting a specialty pet store that sells exotic marine animals and supplies. It is important to ensure that the store is reputable and knowledgeable about jellyfish care. When purchasing a jellyfish, make sure to also buy a suitable aquarium with the necessary equipment such as a filtration system, lighting, and water quality monitoring tools to create a suitable environment for the jellyfish to thrive. **

I'm sorry, but I do not have the specific information on the number of jellyfish in the aquarium. I recommend contacting the aquarium directly for this information. **

The fried egg jellyfish, also known as Phacellophora camtschatica, is a species of jellyfish that is easily recognizable by its large, flat, disk-shaped bell that resembles a fried egg. It is typically found in the cold waters of the Pacific Ocean, particularly along the coasts of North America and Asia. Despite its striking appearance, the fried egg jellyfish is not considered to be a significant threat to humans as its sting is mild and not harmful. **

In an aquarium, jellyfish can be fed a variety of foods such as brine shrimp, small pieces of fish, zooplankton, or specialized jellyfish food that can be purchased from pet stores. It is important to ensure that the food provided is small enough for the jellyfish to consume and that it is suitable for their dietary needs. Overfeeding should be avoided as it can lead to water quality issues in the aquarium. **

In an aquarium setting, jellyfish can be fed a variety of foods such as brine shrimp, small pieces of fish, or specially formulated jellyfish food. It is important to provide a varied diet to ensure the jellyfish receive all the necessary nutrients. Additionally, feeding should be done carefully to avoid overfeeding and polluting the water. Consulting with a marine biologist or aquarium expert can help determine the best feeding regimen for the specific species of jellyfish in the aquarium. **

The box jellyfish is considered one of the most exotic jellyfish due to its extremely venomous sting and unique appearance. This jellyfish is known for its cube-shaped bell and long, trailing tentacles that can deliver a powerful and potentially deadly sting to humans. Found primarily in the waters of the Indo-Pacific region, the box jellyfish is a fascinating yet dangerous creature that requires caution and respect when encountered. **