Petroleum, a fossil fuel, supplies more energy to the world today than any other source. The United States is the world's leading consumer of petroleum; in 1994, Americans used 7,587,000 barrels of oil per day.
Frequently test for ammonia and nitrite (you want both to measure zero). A pH test is also handy to ensure your goldfish's water is not too alkaline or acidic. This can be purchased at any pet store. Do not modify the fish's water, however, unless it is significantly different from neutral.
Like all common goldfish types, fancy goldfish do just fine if water conditions are met and you take safety precautions when handling or feeding. Fancy goldfish prefer 20 gallons (76 liters) of aquarium water at the very minimum, with 10 gallons (38 liters) for each additional fish.ince The Orients first developed goldfish from carp, these fascinating fish have expanded to include a variety of colors, shapes, and sizes. Some common goldfish types are even bred to develop special characteristics.