I do not over feed. Yesterday I took a water sample and the water was dark green. My friend said it look green, My ammonia was very high. So I did a water change and that took care of the ammonia. I notice when I put in pellet food my betta did not want to eat. I usually give one pellet every few days. I am not over feeding, or anything like that. could my betta be stressed from the high ammonia? I hope he does not die. I am tired of losing fish. I try everything I know how to do to keep my fish alive. I found this info through google it says the following. "Betta fish not eating can occur due to poor diet, inappropriate temperature, overfeeding, competition, diseases, environmental changes, stress and poor water quality. All these are factors can be easily controlled if you're a little more careful about your betta fish's health."