Upside Down Jellyfish at the Amsterdam zoo aquarium

[Sallstrom]

Sallstrom, can you tell me the life expectancy of an upside down jellyfish? And how often do they breed?

I'm just curious as I'm getting ready to set up a small tank to keep and breed rock flower anemones. I've already had 3 rounds of babies over the last 2 years in my old 120g tank and in my new 40g cube. If I wasn't doing these, I'd consider the jellyfish idea!

I think ours get to about two years, then they start to look a bit sad.
We breed them if we need a new generation. So about every other year.
My colleague Jens usually collects some polyps and put in a bucket with an air line. Feeds newly hatched artemia once or twice a day and change water now and then. I think you can trigger them to release ephyrae larvae by changing temp, but I'm not sure that's necessary with upside down jellyfish.

I almost forgot, we actually run another upside down jellyfish tank too. At the university here in Gothenburg. Here's a picture of that tank. I think it's pretty cool
Very low tech, just a return pump, heater and two lights.

Edit. The picture is from my other colleague Björn's twitter account.