I got some new fish a couple of weeks ago and when the cycle crashed on my quarantine tank I added them to my main tank ahead of schedule. Cue disease, and commence fish insanity at my house. I managed to separate Jeff and Marigold, the two most obviously afflicted fish, from the main tank and moved them into a 10 gallon hospital tank where I am treating them with methylene blue.
Fungus had essentially consumed the entire left pectoral fin, and after a methylene blue dip the whole fuzzy clump, including the fin, fell off! So Jeff doesn't have a fin on that side anymore, but it doesn't seem to bother him!
Posted by Rough_Acanthisitta63