matt, just gotta figure out who's on top of the food chain..humans! get that fish out and eat it!
thanks for sharing...it happened to me, i once had alot of tissue recession on my corals and all these little stars (ASTERINA) start appearing. i read up on them and realize they're only opportunistic feeders, yes there probably wasn't enough food to go around anymore hence they start feeding on coral tissues but i'm not sure if they will feed on a healthy coral or a sick one with tissue already recessing...which is what I observed. I don't believe i've ever seen one on a healthy colony...anyways, you get my point...