Ok so over the last 6 months I've had multiple fish just up and vanish. No they haven't jumped out of the tank, I've looked. Last week I added 4 baby clowns. 2 black perc 2 perc. Took to my elegance right away a a host. Within 2 days one perc vanished. Next day a black vanished. 2 days ago all I had left was one black and now none. They were about an inch in size. My blue throat never paid any mind to them when I observed the tank and I keep y fish extremely over fed. I've also had two anthrax as disappear, a chromis, a blue hippo, a sleeper goby, and a shrimp. I've searched high and low for carcass' but I can't find anything. I've waited for hours after lights out and gone in with a flashlight. Nothing out of the ordinary. What do you make of this?