Fish was ok at night and in morning had a 2 mm white mark on its face-
( where the nose would be if it had one)
I treated her with antifungal for 4 days as it seemed to have rough edges and a slightly raised look. It did not get any worse. Now the area looks as if it is lifting and there is a dark area underneath. Now I am treating with furan 2.
The question is will a fish make a scab on a sore area and does it lift like human scabs?
maybe she has an ulcer and it is something worse. She is very lively and eats well but fish have a great tolerance for ulcers and open areas before they show any signs of sickness.