Art had been all fine and happy, came home after a 12 hour shift and found him with blisters/ulcers/something on his upper lip.
I've tried bacterial and fungal treatments, but nothign seems to have worked. The males in my tank had injured my female (ulcer down her side after being pushed into an upturned coconut), but she was separated as soon as I noticed (within eight hours of it happening).
The closest vet is 1h30 away, and wont have anything until next week. I really can't lose him because he means so much to me (yes, he is "just" a fish, but he means the world).