Poorly Koi
Hi
One of my fish has developed a patch on its back near its dorsal fin which
is coloured green with algae.
The fish is sometimes lethargic..
I had this happen to a fish year, and treated it with Protoban, but this
seems not have worked this times.
I have photos if anyone would like to look.
Please can someone give advice
Regards
Geoff
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