Hey Mitch....sorry to hear about your fish. I would recommend you give Daniel T. Brauer, D.V.M. a call. He is the local "exotic pets" vet in the area. I am pretty sure he has operated on fish before to remove growth tissue, etc...He is the only vet in the area that fills my prescription for Interceptor as well for my SPS corals...He has a Koi pond in is office....He should be able to help you out, if interested. Best of luck with your fish. Hoping for a speedy recovery.
Daniel T. Brauer, D.V.M.
Dayton South Veterinary Clinic
3200 Wilmington Pike
Kettering, OH 45429
937-294-8888