There has been this really weird thing happening with my rasboras where one by one they get this bump on them, but there are still bright red and eating. Then the bumps spread and they died. I’m just very confused as to what it is and why it is only one at a time. All the other fish are happy and healthy it seems to be only this species in my tank. All my ammonia etc stuff is good and I do regular water changes and I have no idea what’s going on? If anyone knows please respond!
