Welcome! My sister is the goldfish keeper in my family. Her last one was unknowingly adopted. She bought a house and the people left a filthy tank behind, you literally couldn't see into it. Anyway, she figured she'd drain it and put it up. When she got close to the bottom, two fish started flopping! She quick borrowed some water conditioner and re-filled it. Turned out that there was a stunted goldie and a pleco in it. She gave the pleco to our dad because he had tropical(I was still in the military) and kept the goldfish under much better circumstances for close to 15 years.