Fungal and bacterial infections

 

The bacteria and fungus that cause fish diseases are always present in aquariums (although specific species may be introduced with new fish) but will rarely cause a problem if you have good water quality and healthy fish.

Avoiding stress and keeping healthy water conditions are key to avoiding fish disease.  Regularly test your water for abnormalities in ammonia, nitrate, nitrite, pH – and correct any problems, if necessary. 

Poor aquarium hygiene and poor water quality are the key factors in most disease outbreaks.