Is the the xenia that Mel picked up for us? I am quite sure that if a second Ice Age occurs, this pink Xenia will live through it along with the roaches and hydroid jellyfish and other such pests.
Mel, remember the pink pulsating xenia I got from you a few weeks ago? Being the idiot I am, I left it in my car when I got home. I then took it to Church with me and back (2 hours) -- remembering to remember to take it in while at Church, even. When I got home that night, I forgot it and went to bed while it was still in the car. I remembered it the next morning when I was leaving for work and saw it sitting in my cup-holder (in the way of my drink, or I would have missed it again). It was a warm 50 degrees F at that time. The water was COLD. Everything looked nuked in the xenia bag. So I scraped off a piece of Xenia and tossed it in a hole in my rock in the corner where their is not much current. And forgot about it. Until a couple nights ago...
...when I saw four stalks sticking out of the hole pulsing happily along. Amazing. The funny thing is, I wiped out my entire previous xenia population by getting my tank around 86+F one afternoon. I am happy the frag survived, but it isn't exactly where I wanted it.