Species tank AND a lagoon reef AND a QT (I actually tried three or four, including replacements for those that died immediately). Temps were mid-70s in all tanks. I was assured that these were tropical, not coldwater fish, when I asked. The first came showing signs of disease, but we (the e-tailer and I) felt it was ammonia burn because the fish was not fasted before shipping cross country. In retrospect, this was signs of disease, and this fish died in less than a week. I mostly fed ghost shrimp, which they ate. The next two fish did not last long at all, maybe a week or so at the most. The longest lasting, which I tried to treat in the QT, showed signs of Vibrio soon after arrival and went down hill fast, not responding to treatment. Unless I knew of someone keeping them long term, and could know their source and their tank set-up, I would not try this gorgeous fish again.