I have this on a few of my comets and some of my small fry that are about 2 moths old. All fish with spot are all active eat well and all have it in the same general area. This fellow picture was borned in my pond last year. No new fish have be introduced in the last 3 months. However new plants have recently been added.
I kave several Koi in this pond and id like to nip this quick.
Pond volume is about 4000 gals.
Thank you for any input.
Mark


