On Monday I will be rescuing a fish from work that hasn't been doing well at all. All the information that I have is second hand so it might not be completely true, but I will be able to confirm when I get him.
I've been told he hasn't been eating or pooping, he's very listless, and he has a sort of fungal growth on his gills and under his 'chin' area. This has all been going on since the beginning of January.
I looked at the thread about treatment for diseases and got the list of medicine I can use, and I have some aquarium salt but its probably 6 or so years old. Will I need to get new salt?
What is the best first step to helping this guy?
I can get anything I need to treat him over the weekend, so a list of supplies would be wonderful.