Goldfish make great pets because there are many types of goldfish from which to choose, and all of them are easy-keepers. With goldfish you don’t need the financial layout of a huge aquarium; in fact, you can just keep one goldfish in a bowl of water if that’s what you want to do. They are freshwater fish so you don’t need warm water with heaters and ventilation systems, which also means they won’t expire if the electricity should accidentally go off.The goldfish originated in China and was a variety of carp that monks bred in ponds until they arrived at what looks like the modern goldfish. You will not want to try to keep the largest goldfish in a bowl. That’s because they grow to be almost two feet in length and can weigh around nine pounds