Ulcers on fish

[ChrisR_08_20]

My fish in the garden pond have develpoed what seem to be ulcers on their sides. We have treated the water but the ulcers are still there. we have lost quite a lot of fish now. Any ideas?

[foxyflugel]

Hi - are they koi? Mine had what looked like ulcers and it turns out that it was carp pox - caused by stress, and bad water quality - but I didn't lose any though. There is no treatment as such other than to ensure your pond water is balanced (do you test it regularly for PH, nitrite etc ) I think they also suggested that I give the affected ones a salt bath - but if you put carp pox into google then it will give you pics so you can confirm and the correct dosage for any salt baths.

Hope this helps ; 0)