 鲜花( 0)  鸡蛋( 0)
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It might be ick, an infection of the parasite Ichtyopthirius.
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You can increase the water temp up to ~28C and give them drugs (basically Cu2+ ions), plus large quantity of water change. Google for further details.
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# d' Y% ]; b- [& J) `/ l/ E9 oIt might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.8 r' p6 s+ D$ X: M9 Y3 K
& Z* V8 b' j4 |By the way, is it necessary to have >20C for koi and goldfish? |
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