My goldfish keeps on dying yesterday I change 80% of water within one week with tap water overnight 3 fish died and one goldfish gasping for breath what should I do plz help
Your fish is dying of not having the proper setup. You stated in the first post you have oxygen supply. So is it just a airstone or a filter? How often do you do water changes? Do you use a water dechlorinator? Do you have a Freshwater Test Kit preferably API liquid test. Also do you know about the Nitrifying Cycle of an aquarium?