Stock at the time - i used to have a 90 gallon saltwater tank, only had a large yellow tang, two clowns, i believe 3 damsels at the time, and an undulated trigger fish
What happened - went to the pet store and decided to buy a pink anthias (my first mistake). then i brought it home and let the bag sit in the water as they advise to do, everything was quiet in the tank even the trigger, just swimming at the bottom from one hiding place to another... and as soon as i put the anthias inside the trigger goes in attack mode. jumps from the bottom of the tank to the top and bits the anthias in the neck twice, and bits its left eye out.
this all happened so fast it was unbelievable, and by the time i tryed to take the anthias out he was beyond my help. i separated him from the tank and tryed to see if he can recover (dont ask why, i dont know what i was thinking, it was basically 90% dead)
but no luck, and it died in a few hours.. thats the shortest time i ever had a fish in my tank for lol. less than a minute.
i did look at the charts and it said to be cautious with triggers and anthias, but in such a large tank for the fish ( the were both relatively small, no bigger than 3.5in) even the guy that sold me the fish wasnt worried, but fish can sometimes be very unpredictable.