 鲜花( 0)  鸡蛋( 0)
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It might be ick, an infection of the parasite Ichtyopthirius.0 i* ?/ Y0 u2 O2 F/ l4 s
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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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% @6 y$ } |/ fIt might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.8 N( ~* b I1 w v) x
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By the way, is it necessary to have >20C for koi and goldfish? |
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