Cassiopeia jellyfish (aka "upside-down jellyfish") used to be very popular in the hobby since they are "easy to keep" jellyfish (they do not require a kreisel setup, and are photosynthetic).
It has been discovered recently that they eject a mucus that is used as grenades to kill small preys, and seems to be responsible for itchy skin while swimming in an area where they exist, or even in aquariums.
You can read about it here:
www.smithsonianmag.com
Interestingly, this phenomenon had not been described in details by scientists before, but seemed to have been well known by hobbyists. Aka we should grab a microscope and publish more! The following statement is from 10 years ago!
It has been discovered recently that they eject a mucus that is used as grenades to kill small preys, and seems to be responsible for itchy skin while swimming in an area where they exist, or even in aquariums.
You can read about it here:
These Jellyfish Don't Need Tentacles to Deliver a Toxic Sting
Smithsonian scientists discovered that tiny 'mucus grenades' are responsible for a mysterious phenomenon known as 'stinging water'
Interestingly, this phenomenon had not been described in details by scientists before, but seemed to have been well known by hobbyists. Aka we should grab a microscope and publish more! The following statement is from 10 years ago!
upside down jelly fish care
I'm seriously considering an upside down jelly fish for my BC29. Some sites say they are hard to care for.. some say they are really easy. They also say they need bright lights. I assume that means MH. Anybody have some and can share their experiences?
www.nano-reef.com
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