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I've got a Goldfish problem: (Our 10 yr old pond holds about 530 gal; pH and ammonia have always been spot on.) Our 7-8 yr old comet - she's about 10-12 inches in length - has a large pink spongy tumor-like mass on one of her gills; located just behind the operculum, I can't tell if it's attached to the gill, the operculum, or both. The mass is wide enough to prevent the gill from closing completely. I removed her to a hospital tank and began treating with Melafix and Pimafix as well as an elevated salt level. No other fish are displaying any symptoms. My Question: If it's not contagious, I'd like to return her to the pond. How can I rule out bacterial or viral? And, if it's a genetic or non-bacterial/viral tumor what can be done?
She is eating and defecating normally. Doesn't seem to bother her - she's not rubbing etc. She's not gasping at the surface. Did the photo get attached?I have a high res. photo on Flickr: http://www.flickr.com/photos/nikonnut/8714057310/
Thanks for that input. I'll continue as you suggest and get her back in the pond ASAP. She has had enough trauma.