Originally Posted by
GloriaL
Not an emergency, just thought a discussion of this issue might be enlightening, or not. I haven't seen any recent threads on this issue, so here goes! As I understand it hikui is a disease of the beni on the koi. You see a lightening of the color and a ragged appearance to the skin, which in some cases sloughs off. I have hears the etiology posted as genetic, poor water conditions, or possibly viral.
Is it contagious or are all of the fish in bad water? Treatment? It seems there are as many treatments as there are koi keepers. Scrape it, 'cauterize' it with a choice of several caustic agents, then 'bandage' it or not. Does it progress to cause fish to lose the beni all over or just locally. Should you get rid of a fish wth hikui? Really curious to see if there has been any new information on this cosmetic (but ruinous to show fish) disease.