My friend gave me four golden fish and a big fish tank. But after two month, these four golden fish all died. I don't know why. I usually have them in the temperature about 22-25C. Feed them once a day, usually at night. I think it maybe is infected by some virus or bacteria. Because after the golden fish died, we found that their tails all are damaged. At here, I ask for some having experience why?9 f( U# W5 n4 D3 N
Thank you very much.( w# N5 E2 x: c2 B/ O! k; i
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Xiaoxiao