OK, so I've had my humu trigger for about 2 years now. He's about 3 inches long. A few weeks ago he and my blue throat trigger started tearing up my lionfish to the point where I had to HUMANELY kill the lion. Now, last night I noticed that he is nipping at the spines on my Striped Burrfish. I am at a loss. This guy is my favorite fish. He and the lion were my first 2 fish when I started keeping salties and now he's just GOT to go. Anyone else see a fish turn aggressive all of a sudden like that? It almost seems that now that he knows that he can take on something bigger than him thats all he wants to do.