|Fantail goldfish with carp pox|
The water issue was too much for his two tank mates, and he is the lone survivor other than a 17 year old catfish that seems to be immortal.
|Red fantail (sold to me as a Ryukin), blue Oranda, calico Fantail|
I've been a goldfish keeper for more than 50 years (yes, I'm old), but this is the first time I've ever seen this happen.
Note: if you hire a pet sitter, HIDE the fish food and leave teeny amounts in a 7 day pill box. What we call "a little" and other people call "a little" varies a lot.