I have a group of 5 Pinoy Angels in a 55 gallon with a Geophagus Jurapari and all has been going well until this past weekend. 1 of the Angels stopped eating so I removed it from the tank and placed it in a 10 gallon hospital tank and after a few days proceeded to treat with Metro in hopes of getting it to start eating again. Anyway the fish died. The fish looked fine, but just started gasping and hanging out by itself at the bottom of the tank. I'm wondering if these fish require a much softer water or maybe it was getting picked on by the others, although I didn't witness this. Anyway, I'm hoping someone with experience with this species will chime in. The PH is around 7 and the jurapari doesn't mess with them at all. I'm just wondering if this was a ramdom death or if maybe I need to take another look at how I'm keeping them. I was giving them Bloodworms on occasion and have since stopped.