I left my tanks last Friday for the weekend, all 3 of my angels in my 55 were completely fine like they normally are. When I came back Monday night my Altum angel has COMPLETELY disappeared! [emoji24] I can’t find her anywhere!!! I raised her from just the size of a nickel and it breaks my heart...I haven’t discovered her body anywhere outside the tank so my last hypothesis is that she passed and my several cories, 2 plecos and my dojo loach all got ahold of her corpse before I could see it.. my parameters were all fine when I got back: 0ppm nitrite/ammonia, <15 Nitrate.. does anyone have any experience with seemingly healthy fish just dying??? I’m just beating myself up hella right now because I let this happen...