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?% G9 w8 F0 P# t: x8 N5 y
Thank you very much.% H4 Q& p, b. o7 P; F( m
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Xiaoxiao