 鲜花( 0)  鸡蛋( 0)
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It might be ick, an infection of the parasite Ichtyopthirius.
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3 ]/ z5 b% ~! p5 N' f8 ZYou 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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, t9 |# O0 g7 sIt might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.7 n* W" N' \( U
+ \. G& q5 l7 V( \2 `, iBy the way, is it necessary to have >20C for koi and goldfish? |
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