First of all, post your test kit. What brand did you use? Is it expired or defective? If you are using test strips, then again strips are grossly inaccurate as has often been repeated around here. Please get an API liquid test kit if you haven't and retest.
How often do you feed? What do you feed your fish? What is your tank maintenance regimen? pH is not an issue if you have readings of ammonia other than zero. Why? The ammonia is converted to ammonium which is less toxic to fish but the toxicity is reactivated once the water becomes alkaline (above 7.0) assuming your test kit is accurate.
Do your fish have red streaks or blood vessels showing on their body prominently? Please answer all these queries to get a proper diagnosis.
How often do you feed? What do you feed your fish? What is your tank maintenance regimen? pH is not an issue if you have readings of ammonia other than zero. Why? The ammonia is converted to ammonium which is less toxic to fish but the toxicity is reactivated once the water becomes alkaline (above 7.0) assuming your test kit is accurate.
Do your fish have red streaks or blood vessels showing on their body prominently? Please answer all these queries to get a proper diagnosis.