I HAVE ONE GOLDFISH THAT IS MISSING SOME SCALES. THERE IS SOME SPOTS WHERE HE COULD GET BEHIND A ROCK POSSIBLY, SO WE ARE NOT SURE IF IT IS FROM SOMETHING LIKE THAT OR IF HE IS SICK. OUR OTHER FISH APPEAR TO BE FINE. Water tests are fine except Ph is high. By the time you read this ph will be in normal ranges again. Sorry for all the caps i am doing this pondsideon my tablet.