Animal Stories - Common Goldfish


Animal-World Information about: Common Goldfish

Goldfish are fun to watch... just look at all the different colors of these beautiful fish!
Latest Animal Stories
Chloe - 2014-08-31
I have two fresh water fish living in a 96 litre tank with a Tetratec IN 800 filtration system, I preform 10-15% water changes every week and have just recently been bought two more fish, will the size of my tank be enough? The breed of fish are; Common goldfish, two Comet goldfish and a Shubunkin, I'll also be buying a gravel cleaner and an algae scraper very soon, the tank has just been set up and the two new fish are in the quarantine tank for a week or two, any help would be greatly appreciated, also, would a couple small snails be okay in the tank? I'm not buying them till I'm sure everything will be okay, thank you.

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  • Clarice Brough - 2014-09-01
    No, unfortunately a 96 ltr tank is only 25 gallons, and will not be near enough water as these fish get older. When small it may work for awhile, but you will soon have to upgrade. As you can see in the aquarium setup info above, goldfish require a minimum of 10 gallons per fish. That is 50 gallons (190 ltr) just for the 5 goldfish.
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Michelle - 2010-05-08
My daughter just won 5 common goldfish at a local carnival. Are they okay overnight (fish stores are closed), what size tank should we get, and are they okay until morning without a tank? The only options we have are a 1 gallon betta kit and a 10 gallon aquarium (we don't have the water or conditioner for the 10 gallon)?

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  • Anonymous - 2014-06-03
    Ok, first of all you need more than a ten gallon tank. Number two, look on this website if you need help. It works wonders for me. thegoldfishtank.com
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Jimmy Thai - 2010-07-29
Hi I have 8 hardy common goldfish, and they are juvenile fish. Can I keep them in a 10 gallon tank? Since they are still small. I know that they poop a lot and yeah I have to replace the cartridge every two weeks. Me and my dad are caring for the tank, later on we will buy a 60 gallon aquarium at the pet shop. How many gallons does one goldfish need? How big do these kind of goldfish grow? Do I have to build a pond? My tank has a hanging power filter. I wonder if needed an under gravel filter. I have colorful rocks and a bamboo, I know 8 goldfish need a lot of space so I don’t want them to live with lots of decorations. I’m the one who always cleans the filter. My dad always does the water change. Oh yeah, and I need to know how to clean out the fish tank, because my dad usually takes out all the water with a siphon, so I did some research and it said to siphon out 32 cups of water or 20% but I don’t know. So please tell me some steps. I feed my goldfish “Goldfish Flakes” , and that’s all. I tried feeding them “Goldfish Quick Grow Pellets” but when I threw some in, they ate it but then they spitted them out. I don’t know if they are the right age to eat them yet. What else can small goldfish eat? I don’t know if they can eat live food like water fleas or bloodworms. Please give me a good reply thanks!

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  • Anonymous - 2014-06-03
    At lest one gallon per inch of goldfish.
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Sam - 2012-06-19
My goldfish is so nice to me it loves to be petted I hope that's normal!

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  • Yelena - 2012-10-04
    My goldfish wants to eat me alive when it sees me :) I heard they are very social.
  • Anonymous - 2014-06-03
    That's nice and all but I wouldn't do that. Fish Have a slim coat that protects them from illness. And by peting your fish you can be harming them.
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Guy - 2008-07-21
Hi. I have a bad history with goldfish. I saw a 1 gallon goldfish kit at walmart for about $10 with just about everything you could need for a freshwater fish in an unheated, unfiltered tank. I was wondering if this tank would be sufficient for 1 or 2 common 28 cent goldfish, assuming I cleaned the tank once a week because my schedule is tight. If someone could let me know about this it would be greatly appreciated, thanks.

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  • Frank - 2012-06-04
    Nope. The goldfish can not live in an unfiltered tank and certainly not a 1 gallon! You would need at least a 75 gallon tank with excellent filtration no heater thought.
  • Alfred Minio - 2012-06-04
    General rule of thumb is 10 gallons a fish(with goldfish) and they defiantly need a filter.
  • Yelena - 2012-10-04
    I have a baby goldfish in a 1 gallon round fishtank for two months now. So far it's doing absolutely wonderfull as long as i change 3/4 of the water every morning with tap water. It takes only two minutes, so it has become as routine as to brush my teeth. I keep tap water in a bowl overnight before adding it to the tank, so it is the same temperature. My fish is so energetic, and social, and growing that i invested in a 20 gallon tank, and planning to buy another goldfish to keep it a company.
  • Anonymous - 2014-06-03
    No way! You're going to be killing goldfish if you do that. Here is a web page with every thing you need to know. thegoldfishtank.com
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Danielle - 2012-11-17
I have had my fish for a couple months now and lately he has been freaking out and it looks like he is going to jump out of his bowl. I change his water about twice a week. Does anyone know why he is freaking out?

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  • Jeremy Roche - 2012-11-17
    Use some test strips to test amonia.  Sounds like amonia spikes.
  • David Brough - 2012-11-20
    It sounds like you may be changing the water too often and too much of it. First, make sure you use chlorine remover when you change the water. Second, get a small sponge filter or other biological filter like an under gravel (even gravel and plants would help as long as you don't thoroughly clean them too often). Once you have a biological filter going, only do small water changes like 20% per week. Also, if you put a plant or other decoration in the bowl or aquarium, the fish may feel safer. Check out 'Cycling Your Aquarium' for an explanation of how to get a biological filter started.
  • Anonymous - 2014-06-03
    Ok, dude. First thing when you say bowl I hope you don't mean a 1-5 gallon thing. For goldfish you need way bigger tanks. Commons can grow a foot long on average. And number two. Two times a week? Even for a fish tank maybe once a week would do good. And if it is in a bowl, it needs a filter too. Best bet get a tank. And another goldfish too. Goldfish get lonely too.
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Katriana - 2013-03-02
I got 4, 2 centimeter long common goldfish, and one commet goldfish 2 centimeters long too. my sister had hundred as feeders so lil babys. I have a one gallon goldfish bowl and i saved these lil guys. i feed them differents things from time to time so they get what they need; flakes, pellets, blood words, shri,p things for em. they seem happy and healthy, no ick, nothing i can see. They aren't competitive and swim around the whole tank. they seem happy but will the small tank kill them? i heard they grow to tank size and theyre tiny young ones. so will that be fine?

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  • Clarice Brough - 2013-03-02
    They will need a larger tank, the rule of thumb is 20 gallons per goldfish. You will have to get a larger aquarium and should include a filtration system. See the information in the article above on how to take care of them.
  • Anonymous - 2014-06-03
    I agree, these fish you said you saved need a way bigger tank or fish tub.
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Silvia - 2003-12-28
although beautiful and hardy...My suggestion for stocking levels is 1 fish per gallon of water. Also, these fish have the most amusing habit of rummaging around in the substrate, by working gravel in and out of their mouths searching for anything edible.These are hardy fish which can tolerate a lot, but please dont use that as an excuse to mistreat them.

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  • Gavin - 2014-04-09
    1 gallon per fish is not sufficient it must be at least 15 gallons per fish.
  • Anonymous - 2014-06-03
    One gallon of water per inch of fish is better for healthy goldfish.
  • Rachel - 2014-06-04
    We tend to use the rule one gallon for every inch of fish. For a five inch fish you need five gallons of water, a three inch long fish needs three gallons of water, and three one inch fish will also need three gallons of water. For all of these fish together in one tank the bare minimum would be 11 gallons.
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cassiopeia - 2009-12-28
Goldfish must be the most neglected pet ever. I work in a petshop and am constantly bombarded...! One woman came in asking for a goldfish bowl, I told her why we don't stock them and how bad they are for fish. She paused for a minute then said, the garden centre sells them and would she need a small one cos she only wanted 2 small goldfish! I had to bite my tongue, then tryed explaining that goldfish can reach up to 14" and live to around 20 years with the proper care and attention! None of which sunk in, and I know that she probably went to the garden centre where they'll sell anything to make money. I admit I've had my share of beginners mistakes, but my goldfish I've had since I was 5, only passed away 2 weeks ago at a grand age of 15! Also my 1st shubunkin was 10 when he sadly passed on! and I feel they could have been kept better. They were in a 3ft jewel aquarium with only live plants and 1 feed a day, but they could have done with a 4 or 5 foot tank. I took on a new comet goldfish from a man who was moving home and couldn't take poor "sharky" with him. He is almost 1ft in length and is 14 years old, he has a deformed spine and his pectorial fins are tiny, curved up and quite useless! This may have been from a bacterial infection or possibly because his tank was ridiculously undersized! Anyway thats quite enough ranting for one day, the bottom line is don't buy bowls or tiny plastic boxes for goldfish. They need a really good filtered tank, 2ft to start with as long as you're prepared to save up for a larger tank for when your fish grows. Provide live plants for decor an food (they also improve water quality) and always use tapsafe as water companies sometimes add new chemicals to the water.
Hope this rant is listened too and acted upon! (big fish need a big tank)

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  • Lucky - 2010-10-03
    Will goldfish get along with some other fish, like, um, maybe catfish or some other fish that's larger than the goldfish is? Or will it get eaten? =(
  • jenna morris - 2011-01-31
    At my old apartment complex my landlord came to me with over 30 baby commons in a 10 gallon tank that had been abandoned. First thing I did was go buy a 50 gallon tank and start an adoption program. I hit the web looking for how to care for them all but one was adopted. We named him piggy. He is now a spry 6 years old and thriving. I'm saving for a bigger tank! I agree with you. People don't see fish as the wonderful part of the animal kingdom they are. I keep up with piggy's brothers and sisters as best I can. To me they're like abused rescued children.
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Brittany - 2012-12-11
So I have a black moor goldfish along with a common goldfish and an oranda in my 30gallon aquarium.. The other morning I went to feed my fish and noticed that one of the moors eyeballs were gone!! I was shocked. The next morning the other one was gone too!!! Is this common?

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  • Jeremy Roche - 2012-12-12
    That does happen.  Moors are slow swimmers and can't really get away from faster swimming fish.
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