Sometimes fish die in aquariums when the ammonia level is too high. I recommend taking a sample of the water to a pet store to have it checked for anything wrong. I had fish dying and took mine to have it checked. When I got the levels water problems fixed my fish stopped dying. It could be from high ammonia levels, not enough oxygen, not the right temperature, or a disease or parasite
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Give me food and I will live give me water and I will die what am I?
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