I have recently become of owner of two fire belly newts. That I had purchased from a breeder. I have had them for about a week now and today I noticed one of my newts was acting very strangely. He was acting fairly normal and he went down to bottom of the tank and began to roll sporadically. He did this for a few minutes and ended up passing away. I checked my water and everything seems to be fine so I was wondering what caused this sporadic death? Any ideas would be greatly appreciated.