Once again, you are right Gemmy! Let me see...
I got nothin'. Frogspawns have pretty long sweeping tentacles that can sting (nematocyst stinging cells) nearby corals. In general, you have to keep it a minimum of 6" away from all other corals. It takes up a lot of real estate in an aquarium.
It's from the family Euphillia, it's specifically E. divisa. Frogspawns, when they start to show signs of tissue recession, are good signs of poor water quality. They don't do well in aquariums with a lot of soft corals for some reason.