I always thought that goldfish were boring pets. I guess that was because I didn't know much about them. This website has an interesting and very informative article. Here are some highlights:
"Goldfish are also quite trainable. They can learn to swim through hoops, ring bells, and pull levers for food. In a lever experiment involving goldfish, they were even able to realize within an hour that if the lever stopped producing, it wasn’t worth pulling anymore."
"When properly cared for, goldfish will not stop growing. Most fishes are in fact what are known as indeterminate growers. This means that, unlike humans, they grow until they die."
"Goldfish are actually some of the longest-lived fishes you can purchase. They are capable for living several decades under the right conditions, and the supposed record is 49 years of age."
"Originally, goldfish looked very much like commons do, with the exception being the orange color we see today, which was more of an olive color."
Orange is my favorite color, so I'm definitely glad for their current color :)
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