How BIG can a goldfish grow?

One huge goldfish! This just goes to show you how large a goldfish can get given the right conditions and water parameters. This giant goldfish now needs a pond to live out the rest of her life.
Goldfish need a large tank and good filtration for the rest of their lives.
How big can a goldfish grow? Well this is certainly larger than your average goldfish but I think there are even bigger goldfish out there.
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[@GoldfishCorner]

That goldfish is huge. Your goldfish room is awesome!!

[@Mountain_Aquatics]

Thank you Lei 👍🏻

[@christinebravomom5711]

I had to dismantle my big tank, so took the goldies to the pet store. They never got unbagged. A lady at the check-out bought them the minute I walked into the store LOL.

[@Mountain_Aquatics]

Ah shame you didn’t meet her in the car park you could have made a few quid!

[@lazygardens]

In Phoenix, Arizona, USA people often dump their goldfish into the canal system where they go feral. When my brother was in high school he would go to where the canals were being drained for winter repairs to scoop up BIG goldfish. He had to get there before the egrets, herons, and coyotes ate them all. They were common varieties (the extreme fancy fins and googly eyed ones seldom survived) in the usual colors, We had solids, pinto, tri-colors in gold, black and white. They were all at least 6 inches long, some were 10+ inches long. He kept them in our swimming pool, which was chlorine-free for the winter, and sold them to nurseries as "pond goldfish" for their customers. It was a lucrative seasonal business for him. One of our cats - a Burmese mix - learned how to fish. He stood on the top step, in several inches of water, and waited until a fish swam under him. Then he went totally under water, grabbed them with the claws of doom, and would erupt out of the pool with a fish in his jaws.

[@Mountain_Aquatics]

Very interesting. Does the canal still have goldfish?

[@TheAdventuresOfJimiJaden]

I’m from Arizona, and I will confirm Goldfish can only eat and shit. When you release it, it’ll get bigger and bigger, if you release it back, it’ll get bigger still. I think there’s some carp in the Tempe Town Lake.

[@mackenziedowns9930]

​@Mountain_Aquatics Yes. Arizona has, I would assume, thousands of miles of canal systems. The systems are quite impressive and pretty cool. You'll find goldfish, carp, turtles, and all sorts of aquatic life in our canals. People dump goldfish and red eared sliders in the lakes, ponds, and canals here all the time, and they seem to survive pretty well. It's crazy.

[@originalshadowfax]

About 10 years ago I rented a place with a garden pond. Nothing in it apart from newts and a resident toad (which you only saw when it rained and he came out to get some rain drops). I decided to put some gold fish in, all about 4-5 inches long and normal goldfish shape, put a dozen in and they were fed regularly on pellets, although there were plenty bugs and and weeds etc already in there. Eventually it came time to move about 3 years later and I was told I had to empty the pond of fish. I had two big berthas about the same size and shape as yours and also the other smaller ones were also crucian carp shape. They had also bred whilst in there. I managed to get most of the fish out, but it was impossible to get all of them unless I drained the pond which was impractible.

[@hannesofie6071]

Actually Goldfishes grow up to 35 - 40 cm. My biggest have grown past 30 cm. They live outside all year in my pond in the south of Norway! 🐟😄🐟😄🐟 They are all common goldfish, though som has a little longer fins..... Many colours, red, red/hvite, red/white/black, all white, dark brown, black, yellow and shubunkin. Have no idea how many they are...... The pond is all natural, about 10 by 20 meters and about 1 meter deep. I feed through the summer, but in the winter it is covered in ice and snow. The oldest fishes are close to 10 years now. I love how hardy they are! ❤❤

[@johnotooledoggames2336]

Hi from Dublin Ireland 🇮🇪 brilliant video sharing very nice fish aquarium and beautiful fish 🐠🐟🐠🐡

[@Mountain_Aquatics]

Cheers buddy, thanks for watching the video and the feedback. Hopefully there are some other videos on my channel you might like 👍🏻

[@Bullwinkle39]

We used to have 3 or 4 that size in a pretty big tank, we had to get a filter for a tank twice the size just to keep up with them and it still struggled

[@Mountain_Aquatics]

What happened to them?

[@Bullwinkle39]

@@Mountain_Aquatics died of old age. 1 lost an eye, went through just about illness a goldfish could get, got drunk a few times and lived to a ripe old age. That was a long time ago now but I'll never forget that tank 🥰

[@ranger178]

my daughter put a goldfish from a carnival in our pond and it slowly changed to white from orage but it is around a foot long living in with koi from 20 to 30 inches

[@Mountain_Aquatics]

It’s fascinating to see them change colour isn’t it

[@stubbsaquatics6080]

She is big.. ya she needs to be back in a pond. I keep mine in my shubunkin goldfish ponds in my goldfish ponds during the summer but come in during the winter. My big ponds have koi. You have some nice goldfish!! Great set ups in your fish room.

[@Mountain_Aquatics]

She has been homed in a lovely customers pond now, I’ll have to put a video up

[@stubbsaquatics6080]

@@Mountain_Aquatics thanks for the update..

[@tryme4990]

Beautiful fish. Ive got one thats 1.5lbs and 8 years old. He's an absolute unit

[@Mountain_Aquatics]

Sounds look a chunky fish

[@matthewnicholls1411]

Was kept in quite deep water to get that kind of body depth.

[@Mountain_Aquatics]

Yes definitely a pond fish

[@SkinnyLizard3066]

I've had a single tailed oranda that size, so im pretty sure that common is definitely gonna get bigger

[@Mountain_Aquatics]

Could do

[@AzulaisQueen743]

I hope my pond goldies get that big! My four shubunkin were actually hatched in a pond! A lady was moving and dropped them off at Petco. I ended up taking them in ❤️

[@Mountain_Aquatics]

They will as long as they have good water quality. She’s a lovely fish isn’t she

[@AzulaisQueen743]

@@Mountain_Aquatics I'm obsessed with her! And yeah they have nice clear water in their grow out pond! I do a water change at least once a week

[@Mountain_Aquatics]

Make sure you sub, I’m sure I’ll be visiting her again soon

[@robertcooper4434]

I have. 10ft. Deep. Pool. With. Literally thousands of gold fish. All sizes. Short story. 15. Years ago i bought gold fish about 5$. Worth. Had no tank tried to use a house pan. Parents where not having it i did not want to kill them so i threw them in our pool in backyard which has had rain water in it for 20 plus. And now it’s like a goldfish farm lol

[@Mountain_Aquatics]

I’d love to see it!

[@robertcooper4434]

Wow. I never thought you would respond lol. It's in Burlington NJ. I don't know where you are located but I'll make a Lil vid3o and post it. The bigger fish are at bottom. When I get near pool the swim away

[@Mountain_Aquatics]

@@robertcooper4434 we are in wales U.K. let us know when you post the video so we can see 😁

[@Aquadiction]

Great video dude, off topic I know but how are your rice fish holding up this year outside buddy??

[@Mountain_Aquatics]

They are doing really well thank you. I’ve taken half of them indoors as a back up but whenever the ice on the barrel melts I see the ones outdoors are surviving and seem to be doing really well

[@incineroar9933]

What smaller types of goldfish would you say are the healthiest? I'm still debating getting two or three goldfish, and I don't want to get something with extremely weird eyes or health issues.

[@Mountain_Aquatics]

Wakin are a little fancier then your average but still stand out. And shubunkin are super healthy and look really cool. Do you already have fish?

[@GingerSnap7]

I have a Comet gold fish bigger than that in my 90 gallon tank. I live in Ohio where we have freezing temperatures and no outdoor pond to put it in. I’d love to find it a great home where I know it’s going to live it’s best life.

[@Mountain_Aquatics]

Thanks for sharing! I’m sure you will find someone. Perhaps ask in your local pet store?

[@GingerSnap7]

@@Mountain_Aquatics my local pet store is terrible and I would be sending my fish off to its death ☠️ but I’ll look into something. It’s fine. I wish I could put it in one of our giant ponds we have around here! That would be great. But I worry about our freezing winters.

[@collaborationofcuriosities]

😱😱😱

[@toddmiller1933]

How did the Ryukin get on in the comp???

[@Mountain_Aquatics]

They still haven’t judged it! They say they will in 2023 though so fingers crossed

[@toddmiller1933]

@@Mountain_Aquatics best of luck then fingers crossed:) 👍🏼🙌🏼

[@Mountain_Aquatics]

@@toddmiller1933 thank you, I’ll keep you updated 👍🏻

[@brettsfishingdiaries]

Goldfish are part of the carp family, the uk record for a goldfish is nearly 70lbs!

[@Mountain_Aquatics]

Goldfish and carp are related but not the same species. You will never get a goldfish over 5 or 6 pounds. You can however get large colourful carp that look like goldfish, but they would have the “whiskers” that goldfish do not have

[@brettsfishingdiaries]

@@Mountain_Aquatics I stand corrected sir, thx

[@Mountain_Aquatics]

@@brettsfishingdiaries No problem. The papers like to write articles all the time about giant goldfish but they are usually just orange carp

[@ArticunoPeadge]

There is something I still don't fully understand after constant reading, watching videos, talking to people etc. Will all the wild-type bodies (Wakin, Common, London/Bristol Shubunkin) get to this size if you raise them in a large tank? (say 4ft long 240L). If not, is it OK for them to stay smaller or is this damaging to their health? I'm interested in keeping these breeds but not if they'll eventually need to be rehomed due to their size. It's very common to hear that keeping wild-type bodied fish a smaller size is damaging to their health. Fish room videos don't really tell me if these types of fish stay in their tanks and current stocking levels forever. Would love to know your thoughts please! 😁 Thanks so much.

[@Mountain_Aquatics]

That’s a really good question. A lot of it is more to do with the quality of water rather than just the size of the tank. But a larger tank means you can easily maintain better water quality so it usually goes hand in hand. I dint think this goldfish would have ever got this deep in body from being in a tank but quite possibly would have gotten the same length. The tanks in my fish room are 4ft tanks of that helps

[@TheGeoffpike]

What's wrong with upside down fish

[@Mountain_Aquatics]

He has some swim bladder issues after eating

[@loulou-zd1dz]

​@@Mountain_Aquatics is that a problem with dry food?

[@Mountain_Aquatics]

@@loulou-zd1dz if can be, floating food doesn’t help. With this fish I have been using a food called Kenta Gas-X which can sometimes work but no joy so far 🥲

[@Mountain_Aquatics]

@@loulou-zd1dz if can be, floating food doesn’t help. With this fish I have been using a food called Kenta Gas-X which can sometimes work but no joy so far 🥲