That's true. I started target feeding mine when I saw a picture of a hairy shroom that ate a banggai cardinal fish.
It turns it self inside out and wraps around the fish, making the shroom look 10 times its size. Amazing. But skeery enough to start direct feeding so it doesnt kill my fish. And if I lose one... I know the usual suspects now:
Hairy shrooms
Bubble corals etc.