I have had a problem with my fish dying and I cant figure out why. My parameters are in check. I have had a damsel and 2 clown fish since the tank cycled. I added a foxface about 8 months ago and it lived for a few months and died. So I didnt add anything for awhile till I did some upgrades. 3 months ago I got blue tang and my damsel bullied it to death. So about 2 months ago I tried a foxface again and made sure it was bigger than the damsel. The damsel still picked on it at first then I thought he started leaving it alone more but then it died. I got a drogon goby the same time as the foxface and its fine. If the damsel goes after the goby it goes right back at him. So im trying to decide if I should get rid of the damsel. Do you guys think thats the problem or maybe something else?