Hi All,
Im a new fish keeper with a 20 gallon tank with 4 platys and 4 black widows (10 day old tank
). I have just noticed today that one of the black widow fish has 2 white spots on its tail. none of the other fish appear infected. I believe this is refered to as ich? am i correct? if so what is the best way of treating the disease? i have read on a few sites that adding salt into the tank can cure ich
Can any of you kind fishkeepers help me out please?

Im a new fish keeper with a 20 gallon tank with 4 platys and 4 black widows (10 day old tank

Can any of you kind fishkeepers help me out please?