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Have You Ever Had a Pet Goldfish?

Most people probably know what a goldfish is. The surprising thing is that most people have at one time or another had a pet goldfish. That doesn’t necessarily mean that people know a great deal about this kind of fish.

Why can it be said that most people have had a goldfish at some time in their lives? Because about 480 million goldfish are purchased as pets every year. That is several times more than all of the cats and dogs, combined, that people get on a yearly basis, so the average person is much more likely to have a goldfish than a cat or dog.

Goldfish and koi are in the carp family and they tend to be rather long-lived. With proper care, it isn’t unusual for a goldfish to live for 20 or more years and some individuals have been recorded as having lived twice this long.

One such 40-year-old goldfish also holds the record for being the largest goldfish ever recorded. The fish was just under 19 inches long. Most goldfish are much smaller and in large part, this is due to the space they have to grow in. A goldfish that is kept in a 5-gallon tank isn’t likely to grow nearly as large as a goldfish that is kept in a 100-gallon tank. Goldfish live longer than any other commonly-kept aquarium fish.

If a person has had goldfish or has watched them, one thing they may have noticed is that the fish tends to frequently ‘bump into’ plants, ornaments, or the sides of the tank. This behavior is actually easily explainable. Goldfish have taste buds on the outside of their lips. In effect, when they bump into things, they are tasting the object.

Here is also something that many people don’t know; a goldfish doesn’t have a stomach. When they swallow food, the food passes immediately into the intestines for digestion.

A bit of trivia; every year of a goldfish’s life, each scale gets a little larger. This growth can be seen under a microscope as a ring called a circuli. Although the circuli can’t be seen with the naked eye, this means that with a microscope, it is possible to tell how old the goldfish is by counting the rings on the scales.

Additionally, goldfish can be taught and they retain that conditioning for a long time. They have good memories. They can also learn to tell the difference between people, from the appearance of the person, and can recognize different people. Goldfish don’t have exceptional eyesight, however, they can see untraviolet, which humans can’t see. They can also see and will often chase a laser pointer of the sort used to play with cats and dogs.

Goldfish are incredibly hardy. They can survive in water that is nearly at the freezing point and also in water that is quite warm, and even in water that is polluted (depending on the level of pollution). In fact, they can survive without food for about three weeks. However, if they are given an excess of food, they will often literally eat themselves to death.

Interestingly, goldfish don’t have tongues, but they have a better sense of smell than people.

A last bit of trivia; putting a goldfish in a fishbowl is basically sentencing the fish to death. Goldfish bowls are designed for humans to look at, not for goldfish to live in and the water rapidly grows too toxic for the fish to survive in. If you are thinking of getting a goldfish, put it in an aquarium, not a fishbowl.

  • Have you ever had a pet goldfish?

    • Yes
    • No

What do you think?

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Written by Rex Trulove

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    • I’ve also had guppies, back in the time when a person could buy both males and females. Now, most places won’t sell both genders because they populate so quickly. In some places, it is even illegal for them to sell both males and females. I didn’t know there were any at Twin Bridges.

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