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It might be ick, an infection of the parasite Ichtyopthirius.* K X/ o; e1 Z
8 e( h( k# S4 `- D* @9 n% TYou 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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It might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.
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) h) x. O2 s6 \6 B j& TBy the way, is it necessary to have >20C for koi and goldfish? |
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