I have a 5g tank with three live plants (Java fern, java moss, and anubis) and I do 40% water changes twice (sometimes thrice) a week. I am putting stress coat in the water.
Blu was fine, fins beautiful, about two days ago.
Then parts of his Caudal fin just started to go missing. Now the edges are going black, fin rot.
I'll post pictures.
I'm not sure what is making him sick, but it isn't just fin rot. His body and anal fin are turning different colors-- he's usually very blue but it's turning a green brown. He has one weak pectoral fin that in all my time of caring for him, has never really seemed to grow back well, but it is clear of infection.
What should I do? What can I do?
-40% water changes 2/3 times a week