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Common Goldfish
Goldfish Index

Common Goldfish

Family: Cyprinidae Picture of Common Goldfish, Carassius auratus Carassius auratus auratus Photo © Animal-World: Courtesy David Brough

Goldfish are fun! Just look at all the different colors of these beautiful fish!

   The Common Goldfish are an easy fish to keep and are delightful to watch. We would say that about 90 percent of all aquarists first fish were goldfish, won at the local faire or obtained from the pet store in town.

For more Information on keeping this fish see:
Guide to a Happy, Healthy Freshwater Aquarium

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Geographic Distribution
Carassius auratus auratus
  • Kingdom: Animalia
  • Phylum: Actiniform
  • Class: Actinopterygii (ray-finned fishes)
  • Order: Cypriniformes
  • Family: Cyprinidae
Point data provided by FishBase.org
Care and feeding:
   Since they are omnivorous, the Common Goldfish will generally eat all kinds of fresh, frozen, and flake foods. To keep a good balance give them a high quality flake food everyday. Feed brine shrimp (either live or frozen), blood worms, Daphnia, or tubifex worms as a treat.
   It is usually better to feed freeze-dried foods as opposed to live foods to avoid parasites and bacterial infections that could be present in live foods.

Distribution:
   Domesticated goldfish are distributed world-wide but originally came from China.

Size - Weight:
   Common Goldfish get up to 15-20 cm (6-8 inches).

Social Behaviors:
   Goldfish are very social animals and thrive in a community. Not only are they a great community fish but they are great scavengers as well. It is really not necessary to add other scavengers or other bottom feeders to the aquarium when you have goldfish.

Temperatures:
   Recommended temperatures for Goldfish is 65°-72° F (18°-22° C).

Sexual Differences:
   Although is it impossible to sex Goldfish when they are young and not in breeding season, the male is usually smaller and more slender that the female. In the breeding season the male has white prickles, called breeding tubercles, on its gill covers and head. Seen from above the female will have a fatter appearance as she is carrying eggs.

Water Region: Top, Middle, Bottom:
   These fish will swim in all areas of the aquarium.

Breeding/Reproduction:
   Common Goldfish are egg layers that spawn readily in the right conditions. See Breeding Freshwater Fish - Goldfish for more information on breeding Goldfish.

Availability:
   The Common Goldfish is readily available and is inexpensive.



Comments from people who have kept this fish:


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I have two goldfish, a small gold one and a bronze coloured one. They are easy to care for and I keep them in a 2 gallon aquarium.

Maddie 2008-04-29

I am about to get one or two common Goldfish. Your info is so helpful! Thanks!

christina 2008-03-09

Hi! I went to a fair and my big sisters friend won me a common goldfish. At first I didn't have it in a tank but after some research on the web I got it a 5 gallon tank. It looked lonely so I got another common goldfish! They were both fine for 2 years until the 2nd fish died. Recently, I got my 1st fish a 10 gallon tank and I'm wondering if i should get it another friend, but since Bubbles is so big I should probably get a bigger tank first!

Haley 2008-03-05

Hello, I'm Augrie and I live in brazil. I have 2056 fish.

augrie 2007-12-11

Hi all, I won 4 common (feeder) goldfish at the Bureau County fair this past August (2007). 1 died the following day and I figured that they all would within a week or so, since I've never had any luck keeping the ones from fairs alive. Suprisingly the other 3 had been very healthy and active. I just lost 1 more about a month ago, it was a fighter, as it took roughly 22 hours for it to give in. I felt so bad but there wasn't anything I could do :( The other 2 are doing fine and I am getting them a larger fish tank soon as well as some new companions. I'm not real sure what is going on with them but the bigger of the 2 fish keeps nudging the smaller one in its stomach area. I was wondering if it is trying to mate with the other but I don't think they would be old enough for that yet but it is hilarious watching them do this.

harlie 2007-11-30

I breed all types of gold fish and my favorite to breed are the black moor gold fish. I love them because the are easy to keep clean but you should always have a filter unless you have a betta. But get the fancy black moor goldfish

Anonymous 2007-08-06


Some of the coolest comments:

I have had up to 30 Comet goldfish at a time, and I love them! Contrary to popular belief, they live longer than a week. Ive had my feeder comets for a year, and they are still going strong! I do not believe they are a good beginner fish, because they require a lot of cleaning. they have fast metabolisms, so they are constantly eating and extricating. I have two undergravel filters and one power filter in my ten gallon tank, and that seems to be the minimum to keep the water clear for two weeks. Then I do a partial water change. There are currently ten small comets and shubun comets in there. I do not believe in keeping them in "goldfish bowls" either, unless you are willing to clean them out every other day! That would be hard on the fish, so I dont suggest it. Those of you who keep healthy goldfish, enjoy!

Cassidy Jones 2004-10-22

I first bought 15 feeder goldfish at 5 for a dollar 3 years ago. The nice lady at the pet store gave me one extra. They were only about an inch long. In the past 3 years 3 have died but the rest are between 5 and 6 inches long. They seem to be growing too fast but that is probably only because I have kept them in an outdoor tank. I guess you could call it a tank it is actually a huge tractor tire that is approximately 450 gallons and is directly hooked to a well and has water available anytime. There is a faucet thing underwater that is tied to a plastic float. All I have to do is push the float down and water comes out. The tank is about 4 foot across and 3 foot deep. I keep them there all year round even in the winter. It freezes about 2 inches solid every year about every day in the winter. I am only 14 years old so I`m out of school during the winter because of snow so I have this sledge hammer to bust the ice gently so not to scare the fish. The tank doesn`t have any sort of filtration just when I dip out about 10% of the water every day.

Marcus Barber 2004-07-16


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