I was in the process of battling Marlix which had recently spawned and I had stuck a handful of blows. Suddenly, game chat announced "Marlix has fallen" despite the fact that I had not hit it. There were no items dropped and no tokens given.Is it possible for Marlix to be killed by other hostile mobs? There was an enderman in the vicinity. Could the arrow fire from Marlix have angered it? The only other possibility I can conceive of is damage from a cactus since I was in a desert region.