recently ive been doing alot of water change . could it be chlorine burn?i doubt cos i use anti chlorine. my asian arowana has like white dots on the top of its body . its not white spots definately . much smaller ... really tiny . and theres alot of them . what could it be? is it harmful? it used to be on the fins . Now its back on its back . any help or info as to what it is will be greatly appreciated