No I did not quarantine the goldfish and they normally they only last an hour in the tank. The larger peackok bass ( one inch longer) that I separated to another tank bit him and the Leichardti lost some scale that to my knowledge did not become infected. I sleep in the same room as this tank and the fish seem if their going to come into conflict it happens during the day and my dad said he found him dead in the morning before his morning feed with no bits or frayed tail fins and he was eating pellets the night before. Being away from the tank during the week I am really in the dark about what actually happened.