I have a Ogon Koi 20" it has sores by front fins i have removed rotten scale with twesers and applied topical medicine. also two soses on under body. I put fin rot and fungus treatment in pond as advised. after correct time put in Ulcer and Wound treatment. Took fish to Aquatic Center they took Scraping of fish they found nothing nasty. applied medicine as advised kept isolated for a few days to medicate easly no other reason. After 6 days she wasant happy in isolation so put her back in pond. alright last night But today she is swimming on surface, ocasionaly going a foot deep. and she has bubbles comming out of her right gill then puting her head out of water with mouth wide open Does any one know why she is doing this or what is wrong and can I do anything to help Thankyou We decided to keep her isolated so as we could medicate each day day 6 she looked like she wouldnt last long in container any more. Shop didnt say to isolate. It has now been sugested it could be swim blader infection try Acriflavin i am going to shop to get some