upside down jellyfish

[MKLKT]

To be fair though I wouldn't be surprised if it was an opportunistic feeder, it's listed as omni/carnivore. Like your tiger cowrie (I tried one once had problems with it eating certain corals and slower animals as well as bulldozing the liverock like crazy), I'd wager it needs a setup that has the least chance for causing problems. Certainly a "with caution".