Have had this panther since it was like 2 inches he’s probably about 16 inches now. He’s been an lagoon mate but about 2 weeks ago he got into it with my 7 inch clown trigger I happened to be there and saw it. 1 day later clown triggers dead and both blueline triggers are flooding in the overflow too There are 4 niger triggers in there and he leaves them alone. There is a queen trigger in there which is full size and I swear the groupers starting to try to irritate it too. There are several large eels and lions and 2 rays and a couple sharks and ya sometimes thing get eaten but this groupers hunting. I’ve never seen this kind of aggression from a panther before. Is it like mating season or something ? Have several other groupers in there. They are always at the front row when feeding so I know it’s not due to that