Heita to evryone. My betta fish is doing just fine and i enjoy to watch him playing aroun his territory. "killer" has not displayed any negative harecter and signs of get sick. Killer is tough and energetic.I ve bought some chemicals such as aquistrol. This is said to play crucial role in helping betta fish, when they get sick. I am not certainly sure about how to look for symptoms and diagonose it with any illness. I just bought the chemicals for emergencies. Despite evrything " KILER" enjoys his aquariym a lot.