Goldfish can see ultraviolet and infrared light, and more colors than humans.
Goldfish can survive in a wide range of water temperatures, including very cold water.
Goldfish can remember things for about three months, and can even learn to recognize people.
Goldfish eat small amounts of food at a time, and can often overeat to an extent that they can die.
With the proper care, goldfish can live for decades.
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