Hi all, I am an inexperienced fish owner who adopted my roommate's dorm goldfish five years ago. A few days back I noticed him on the bottom of the tank, turned sideways. His tank looked particularly cloudy so I figured it was ammonia poisoning from unclean water. I did a full water change and about 30 min later my fish was back to normal. Today I woke up to find my goldfish on the bottom of the tank again, sideways. I changed the water again as quick as I could, leaving about 50% old water mixed with the new. This did not improve the situation so I brought out a brand new 10 gallon tank I had in storage and set it up, filling it with maybe 70% new water and 30% old water (the tank is much bigger than the old tank, which is around 2.5 gallons). In order to keep some of the bacteria present I transferred over the bubbler and fake plant into the new tank along with some of the old water. Considering the dire state of the fish I added him after letting the tank run for a few minutes - doubt he would have lasted too much longer in the old tank. The tank transfer was maybe 1.5 hours ago and my fish is still not showing much improvement. He is laying on his side, breathing at a normalish rate and sometimes trying to swim about the new tank. Tank Info: Partial water change about every two days, full water change (~50% old water mixed in) about every other week I do not have any testing kits at the moment so I do not know the current levels of ammonia. Old Tank: 2.5 gallons Bubbler API QuickStart in tap water New Tank: 10 gallons Filter Bubbler API QuickStart in tap water Current situation: Think there is a chance for my fish to survive? Is there anything else I can do to help him?