My first was a lemonpeel angel, very active, graceful. He died when my tank suffered a mysterious die-off. Everything in tank, save a few snails and crabs, died over the course of 8 hours. I still haven't figured out why. Well, I know what caused it, HUGE nitrite spike, but cause of spike still undetermined. I went to bed, everything fine, woke up, everything dead in my old 55 gallon tank. I'm in the process of taking the tank down to sell it, and transferred everything from old tank to new 72 bow, which just got a clean up crew put in yesterday.