I just got into the hobby and knew nothing about it . So the fish keeper sold me 5 goldfish and a 10 gallon tank.( they are absolutely tiny and have a lot space to swim as of now ) and when I started doing research afterwards ( I know, stupid) I freaked out and I can't upgrade my tank for a couple of months. So I put 2 filters, aerators, 30% water changes every 2/3 days, and tested for ammonia and nitrates frequently . And my tank looks great. And my fish were happy. This video was a sigh of relief that what I was thinking was right. This video is important

I'm a scientist and your advice here really makes sense. It is the best guidance I have seen in many, many KZfaq videos on goldfish care. Basically, you are telling people they need to test the water perhaps weekly for all the parameters you have mentioned, and water changes are mainly driven by nitrate concentration.

This is literally the best video on this topic I have seen so far. Everything is so well explained. Great channel with a great content!

Thank you for this and I agree. Getting ready to renovate a 150 gallon and have my first Goldfish tank after being a Cyclid keeper for many years, and I appreciate your videos sir.

My "rule of thumb" is about 10 gallons per goldfish, but use double the filtration recommended. I only do a 50% water change about once every 4 to 6 weeks. In my 75 gallon tank I have 7 goldfish and 2 aquaclear 70's for filtration. I have had this setup for decades and my fish live for a very long time and grow to a substantial size very quickly. Bottom line, the rule of thumb is, do what works for YOU.

Yessss 110% agree. As long as the water quality is good, filtration is there, and you’ve got a good cycle going. Do what you gotta do! I read some of the lectures and comments and it’s unreal. Didn’t know we had so many gold fish cops that paid our bills 🙄. Enjoyed the video man!

I’ve learned more about goldfish through my own research and joining Facebook groups. I only look through the files of the Facebook groups and RARELY ask questions on them. Any questions I have I go straight to forums on specific websites instead. I really appreciate this video a lot because some of the info given to these new goldfish owners terrify them and scare them entirely out of the fish keeping hobby. Especially with the crazed fish owners who attack and berate the new owners about their set up. Most of the Facebook groups I’ve seen have just been cruel and severely judgmental. Nobody helps, everyone just launches into attack mode instead of actually educating.

Won a subscription..just straight to the point..no BS..its all about maintaining water parameters

Wow! Thanks Luke. This was really helpful. I'm pretty new at this but I keep my tanks minimal stock and very clean. I wanted more than one goldfish and you're right - I've heard I need basically a 100 gallon monster for 2 goldfish! Quality water and quantity both important. 2 Black moors in a 50 - kept up well should be good with my set ups. Thanks again man - really helpful!!!

I work at Petco as an aquatic specialist. When people wanna buy a comet goldfish it is really funny. I say that there is good news and bad news: You're buying a 25 cent gold fish but you have to spend over a 100 bucks on the setup.

Can you do a video about common misconceptions about goldfish? Or fun facts about goldfish?

Me listening to this as an English person desperately translating gallons to litres every time you say something 😣😂 So pleased I found your channel… my 5 year old won/saved a goldfish from a fair yesterday… I didn’t realise they needed such big tanks… I really feel for all the ones in such small tanks, I thought 40 litres would be big enough… he’s only about an inch long at the moment though… looking for a bigger one online now. Thanks for your channel 💛

The common goldfish i got about a year ago from a school project has been through alot, but he is a trooper. He is a healthy 3-4" common goldfish. He has been in a 10g (with healthy parameters) for the past few months but i finally had the chance to get him a 40 gallon breeder! Gonna go with black sand and 4 60g sponge filters . super happy to be setting this up for him

Thanks for the clarifications. I have 5 goldfish & a pleco in a 40gal tank but after seeing all the videos on YT, I though I would need to re-home them and keep only 3. There is plenty of swimming space, so I guess upgrading the filtration & adding aquaponics should keep the water parameters in check and they should be fine for a few years until they get too big.

I got 8 small goldfish on a 35 gallon tank, with an overhead sump and a cannister and am doing wc every 5 days, this vid really helps

Wow I didn't know they need that much space have you talked about food diets for goldfish.

When i joined the hobby last summer i was told by the pet store that 4 goldfish could live in a 18 litre tank…. They weren’t happy so I took the financial hit to got a 74litre tank and it worked out great 😊

i just bought a 55 gallon to upgrade my two fancy goldfish to from their 30 gallon tank. was considering adding another pair to the stock but wasn't sure about it, now i think i'm pretty confident that i can do it well! i was already doing 1-2 50% water changes a week and i bought a very strong filter for the 55 so i think i can do it safely

I have a 55 gallon tank with 4 fancies and a pleco in it and it works great

Bro thanks because at one pets smart they said it was ok to have 6 goldfish and pet co said the same thing but then we went to another petsmart and they said 2 goldfish per 55 gallon this video really helps

I have 6 goldfish in a 55 gallon but running with 2 filters that run 600 gallons per hour and 3 pothos plants and java fern on rocks and only feeding frozen foods and 50 percent water changes a week

At last. Someone who talk not based on made-up rules. You earn a subcriber. I love your explanation

I had a goldfish in a 55 gallon tank for 11 years. Grew just above 13" was an absolute unit. Won it at a fair lol

Stocking and tank size for fancy goldies has always been a debatable issue. I’ve got a 260L with a Juwel Bioflow circulating 1000L/Hr housing 8 fancies, some zebra danios and a couple of loaches. Fortnightly water changes and a good clean keep it in check with ammonia and nitrates always where they should be prior to change as a double check. Only thing I’m toying with at the moment is whether I should add an air stone to make sure there’s enough surface aggitation but my filter outlet does plenty.

If i may add, another reason to have space for goldfish is that they do grow pretty big. I had a telescope and 2 orandas and they were about 8"-10" each in a 55. Smaller tanks with more goldfish may become a crowing problem for them with less space to move around if these babies really grow. They will be overcrowded. The filtration and oxygen as discussed is correct but their space to move around could be the problem and not so much what was explained in the vid.

He knows his stuff, correct, there's no problem with overstocking, just needs more maintenance, i have 12 angels in a 15 gallon tank with a baby gold severum about 1.5"-1.8" they are all doing great

I think theres alot of misconceptions about goldfish

I’m quite new to keeping goldfish (only 4 months) right now I have 5 juvenile fancy goldfish In a 20 gallon and In the future I’ll upgrade to a 50 gallon. I have noticed yes goldfish are messy but with a good filter and regular water changes the perimeters stay good 👍

I have 55 gallons with 6 single tail goldfish, water is well agitated and parameters are fantastic. They are in fantastic health. The amount of times I’ve been told it isn’t enough space for them is shocking.

Great relief as I’m trying to rescue some fish (2) ((common goldfish I believe)) from what is basically a bucket/pond? No filtration (besides some plants lol) or anyone taking care of them but I only have a 20 gal atm. No problem with upgrading in the future and possibly getting a pond for them but, want them out of that situation soon. ❤

Great job! When sharing all u have to do is copy link guys!

🔥❤️‍🔥 I've been having 5 comet goldfish in a 30 gallon octagon aquarium for over 2 years and they are doing perfectly fine. Just got a 55 gallon for them.❤️‍🔥🔥

Thank you!!!! We really want to invest in raising our own ranchus. And the information isnt consistent out there. So this video was so helpful

I have 3 fancy goldfish and 2 loaches. They get veggies, fruit, bloodworms, daphnia and flakes in their diets. Cleaned weekly and filters changed less frequently. They seem happy enough and their fins are popping with colour. My goldfish are a good 5/6 inches long each.

I have 2 fancy goldfish in about a 37 gallon with an ehiem classic 600 canister filter. I do a 50% water change once a week at least. The tank is also heavily planted and ammonia and nitrite are always 0 and the nitrate is never more than 10.

I have 12 baby goldfish in a 10 gallon tank I tried to separate them 4 to a tank but they were extremely unhappy and would just hover in the corner. I moved them all back in a tank together and immediately they were back to normal swimming around happily. For whatever reason they prefer to be together.

It's good to know size isn't everything. I have a 55-gallon with 5 shubunkin and 2 fantails. since the shubunkins are now around 7" I bought a 75-gallon to move them to. Unfortunately I fell in love with a small butterfly telescope so that makes 8. I've moved all but 3 large shubunkins over (more and my nitrites spike), but knowing that if I can keep water parameters good it will be fine is good to know. I have Amazon swords all across the back of the 75 and have pothos clippings and floating plants. As I'm waiting for bacteria to increase (about a month into cycling) I'm borrowing some driftwood packed with moss from a 29-gallon tropical tank to help and provide more shelter for my 3" butterfly telescope.

I have 5 goldfish in a 20 gallon rn they're all very little very young(1.5-2in). I have 2 orandas 1 fantail 1 telescope and 1 ryukin. I'm going to be upgrading to a 55 gallon next month. I'm really glad I saw this I was stressing because some people on reddit told me a 55 isn't big enough I was debating keeping one fish in the current setup to not overstock. I'll post a video on my channel when I get the 55 gal cycled and figure out filtration etc. I love these fish so much I can't even put it into words. For now I've been doing a daily 20% water change. At the end of the week I do a 70%-80% water change. I've been studying up on these guys and I love them so much I just can't wait to watch them grow. 😩

There are actually strict mathematical formulae for this developed by professional biologists. The weight of animals should not exceed 1/1000 of water in a well-kept aquarium. For example, if you are keeping 1 goldfish in a 10-gallon (38 litre) tank, its weight should not be over 38 grams. Then for slim-bodied goldfish and koi there is a formula for estimating their weight in grams based on their length in cm. Length x length x length x 1,7 / 100. So, for example, a 10 cm long goldfish will weigh 10x10x10x1,7/100=17 grams. The 1,7 part is not strict and depends on the fish's individual build. For an adult overfed egg-laying female it could be 1,8. For a young underfed male may be 1,6. So based on these calculations a 10-gallon tank is fine for a goldfish under 13 cm. A foot-long goldfish will need a half-ton tank. 😃

I have a 10 gallon with 1 ryukin goldfish in it at the moment however I have 75 gallon filter to make sure it’s clean. I also do water changes twice a week and it’s small about 3 inches and it’s a grow out tank

It depends on what type of goldfish you have as well. Single tail and some split tail varieties(Shubunkins, Comets, Wakin, Jikin, Watonai) grow to 12" to 15". Regardless of how great my water parameters are, I would not keep 3 of these types in a tank smaller than 75 gallons as they need room to swim.

Tbh for every fish the general shouldn’t be followed always especially with discus if you have good flowrate on your tank and you do regular water changes

I have a 20 gallon with one goldfish in it- I do water changes pretty frequently and I’ve got some live plants in there too! (I’m experimenting with aquascaping). I’m in several goldfish groups and I feel bad about him (the fish) being in the 20 gallon. The way people talk is like he’s being tortured, and I feel bad. I intend to get a bigger tank at some point, but probably not until I move out of my parent’s house.

Love all your tanks bro and because of you I hove over 22 gold fish now lol 😂 but I have 20 tanks as well keep up the videos bro good work

This super helps! I was really intimidated before.

Just subscribed based on this video. I didnt just want to know what to do, I needed to know WHY. Thanks

I just learned about these guys from your tiktok I follow you on both and now I’m watching everything about these little guys I want one now and so far answered all my questions any more info you have for a newbie ? I’m gana get a 30 gall tank for 3 fish

I didn't tealize until now. Goldfish (1) needed 10 to 20 gallons just for one fish. Im surprised my walmart fish lived so long in studio apartments. They only died when I changed the water temp or didn't let the new water sit long enough. Im thinking for getting guppies next year.

What’s the smallest size you recommend for one gold fish. And the smallest u recommend for 2.

I have 10 in 75g . Fluval FX6. 40% planted. Doing water 50-70% water everyday 2 days.

Could I do 2 Fancy’s in a 29 gallon? I have a hang on back, and a Sponge filter. Or should I just have 1? I am fine having 1, but if I could have 2, I would love that! I would also do around a 25% water change once a week!

Would you please kindly do a video on how to set up a gold fish tank please? Like what kind of filter , substrate and plant are needed . I tried and failed a couple of times . Water get cloudy quick and the goldfishes got sick easily.

I love this! You rocked this video.

Thank you for this info, I appreciate it, very helpful. I'm getting some Oranda goldfish, I'm so excited ☺️😊🐟🐟🐟🐟🐟

I had goldfish and I put a bubbler in the tank I hade 2 goldfish in there a black one that has big eyes and a normal goldfish there names were Bubba and rocky I ofc had a bubbler and I changed the water to keep it clean I went to petco and bought rocks and it was glow in the dark cus why not and I fed it good I may have put u little bit to much in there so uh.... they died idk why do I need a filter? DO I NEED A NEW BUBBLER? do I need to slow down my feeding ar *area* bye 👋 🤔

Thank you best video in regards to this subject

I have two small fantails in a 40 litre tank. (10 gallon). I water change 3 - 4 times a week. 2 x 75% changes and 2 x 50% changes. Im going to upgrade soon. Water conditioner is my best mate these days. I plan to go stoneless and add extra filtration when I upgrade. Currently have a sponge filter and another filter. Will upgrade all of this.

I’m going to use pathos in mine I’ve heard the goodies don’t mess with the roots too much and they suck up so much nutrients so is should keep the parameters in check. Also using two large sponge filters with a 300gph air pump

thanks for the video!!! Can you do a video on how to prepare and deal with a two week vacation? The reason why I've never gotten fish is I like to travel. And I don't want to pay someone to come in daily/weekly. I know there is auto feeders. Can fish deal with not having water changed until two weeks? I'm sure it depends on tank size/number of fish/etc (like you discussed here). But any other words of advice? I'd love to have fish after wanting them for over 50 years.

I agree!! If you get like 50 fish in a 20 gallon tank (i have 15 2 inch fish in a 10 gallon tank) and as long as your water is good its fine. unless you put 55 goldefish in a 10 gallon tank but no one would so your good.

I have my 4 year old goldfish in a 10 gallon at the moment. In the beginning of my ownership of her I had her in a 40 gallon plastic tote setup on my balcony, I down graded her to a 10 gallon cuz I moved to a house and can no longer keep her outside. I plan on buying a 35 gallon tank as well as another goldfish tank mate, she's been alone far too long.

yeah they want to be with other fish u are rlly good at taking care of them

Great informative video mate 👌

2 baby goldfish in a 10 gallon. But will upgrade once they get bigger. Water parameters is good and have a sponge filter and a hob going.

Thank you so much! I wanted some goldfish(Only 2) in my Biorb and was told no.

Nice vid luke

I will have a 60 gallon goldfish tank with four goldfish that will have a canister filter rated for up to 100 gallons, a few sponge filters, a 50 gal HOB with pothos growing out of it, as well as lots of other plants that my goldfish won’t devour, and 2 50% water changes a week.

New to keeping goldfish. What kind of plants is that on top of your tank?

Any help with aggression to new goldfish? My 3 have been picking on the newcomer all night and into the morning. feeding usually helps stop

thanks for the clear advice

Great video man

Yo just came from your tik tok

He is completely right

not a keyboard warrior, but i've seen the exact example of 20 goldfishes in 20gl tank, and another keeper who do 100% water change weekly with deep cleaning filtration system+tank and just feel like punching them bc both of them keep insisting what they're doing is absolutely right and healthy, and refuse to listen to people. a lot of thanks to anyone who invented blocking system tho.

i love the spider man in the background luke lol

Yes

It's not only waterchange and filter.. It's space too, if you care about your fish of course. I have 5 in a 80 gallon tank, and that's enough fish for me.

Hey Luke, great video. I have a question, I have a 53gallon tank, and wanting to put in 3 fancy goldfish in, I currently have a Fluval 306 canister filter, but with what you say in your video about upping the tank filtration, what are your thoughts on fluvals FX4 canister filter? Will the flow be too strong for the fancy goldfish or do you think my current filter is perfect? I'm currently doing a water change every 2 weeks, but I only have rainbowfish and cory cats in currently (these will be rehomed before the fancies arrive). Your thoughts would be appreciated. Thanks

I have a 20 gallon long with a sponge filter rated up to 40 gallons and some pothos, I plan on doing a 30% water change weekly would I be able to keep 2 fancy goldfish? I’ve also kept multiple different species of fish

20 gallons for one with a super obsessed protective owner should be fine, right? Multiple water changes and an API Master kit.

Hi luke . Im your regular viewer..just want to ask is it ok for a 2-inch ranchu in an 8 gal tank for the time being until it gets a little bigger maybe 1 in or 2 inch more..

It's all about the water changes I have a 60 gallon wayyy overstocked but... I have great Filteration and water change 75% twice a week all my big orandas are healthy and happy

Very interesting video ! Good job!

Awesome videos I learn a lot everyday from you 👍😍

Thank you so much It really helps me your ideas. Thanks a lot

Hi. This is Samantha. I’m starting my goldfish tank. I just bought a 29 gallon tank. I’m planning to have at least two goldfish. Possibly three.

I dont know if you have this video uploaded yet, if not, could you PLEASE make a video about goldfish diseases/treatments? There are a lot of informations out there and i was overwhelmed with which treatment is best for what. I and many people dont want to use the wrong thing, and be “Too late” 🙏🙏🙏

I have 5 in a 20 gallon long with a 307 canister filter parameters I plan on upgrading to a 40 breeder or 55

would 2 adult fancy gold fish do well on their own in a 29 gallon, with two spongue filters, and a weekly 1/3/ water change? as adults?

"there is no rules of thumb like 20 gallons for a fish." I can hear reddit user raging from here. they just afraid to show up.

In my local (uk) pet store they say you need no less then 60 litres=13 gallons. I have a 24 literally for 3 small common gold fish give them enough food for them not to fight once a week and I Change their water around 1 every 2 weeks and deep cleaning 1 a month cuz I don’t want them to get to big. I will buy a second 24liters because I think my female(Beyoncé)might be pregnant so I can save her from my bigger male (Bruno) stressing her. Is that wrong .

Can you help me with the leaves on top or plants on top of your tank ? Does it give fish just more oxygen ? Do you have a link to this as well? Thanks.

Thanks that clears up alot. God bless

Hi Luke! Hi fish keepers! ! Alert: big question coming: Are 5 fancy gold fish, 10 harlequin rasboras, and 6 esmerald corydoras too much for a 75g tank with an Aquaclear 110g hang on back filter, plus 2 big sponge filters, plus Java and anubias plants too much or just enough for a weekly water change and happy community fish? Thank you guys and gals !!!❤

Doesn't matter if water parameters and oxygen levels are perfect. If your fish don't have enough swimming room, it's overstocked. 7 goldfish in a 55 gallon is objectively overstocked. Rules of thumb exist to help ensure the safety and health of our animals, and if you can't afford to provide your goldfish with a big enough tank, DON'T get goldfish!

I have two questions: 1. can a 20 gallon tank hold two fancy goldfish if I make sure the water parameters are healthy and I do regular water changes, 2. if not can I keep a single goldfish by themselves or will they get lonely?

I have a 75 gallon tank with 3 goldfish with two 200 gallon canisters filter an a aqua clear 110 too an do 90% water change every week

Hey Luke. I’m planning on getting into the hobby. Do you have any recommendations for beginner kinds of goldfish

I agree, it's the maintenance not size.

My son won a goldfish at the fair today and we are unprepared. I was wondering how can I keep the goldfish alive for the night?