I had an outdoor pond, and was sold three Pearlscales. I had a fishtank when I was a kid and my parents had a large 55g I think, but remember very little about them, so I was excited to have fish again. Anyway. Soon all were gasping at the surface. I very quickly learned about as much as I could. (Why didn't I do this before you ask?) One died within the first couple weeks, after I bought them a tank and moved them inside. The other two did alright, for a few months. Then one got sick. We treated her for the longest time. We bought her a seperate tank to isolate her. She lasted a few months, not getting better or worse, until I decided to euthanize her. The third I am pleased to say, is still alive and getting fatter by the minute. The tank I originally got for treatment is soon to be full of white clouds. Also I got a couple of bettas along the way.