A few days ago, I caught an asterina in my leptastrea and thought it was eating my coral. An hour or so later, the asterina disappeared and I thought nothing of it. Today I saw an asterina in my dendro so this time, I decided to watch. To my amazement, the dendro devoured it; albeit slowly. No surprise with the dendro as it has a big mouth but the leptastrea puzzles me.
FWIW, the leptastrea held the asterina for almost the whole day. The dendro took roughly 6 hours to eat.