But Luke! Won’t smaller goldfish grow into larger chunkier goldfish, so the stocking recommendation should be the same? Well no… yes your smaller goldfish will grow but they will likely never grow to the large “jumbo” size achieved at goldfish farms unless your purposefully push that growth and get a goldfish young enough to do so. If you purchase a jumbo goldfish it will need more gallons per fish (keeping water change variable consistent) then a smaller average sized one that you are not purpo