Betta Fish Bubble Nests - everything you need to know

Betta Fish Bubble Nests

What are the bubbles at the top of my betta fish tank?

Have you ever seen clusters of bubbles on the water’s surface in your betta fish tank?

Bubble Nest

These are called bubble nests and they are a completely natural behavior of a betta fish – in fact bubble nests are a good sign that your fish is both healthy and happy.

Why do betta fish build bubble nests?

It is all to do with the breeding process. In the wild, male bettas cluster small bubbles on the water surface, or underneath floating debris and leaves to build their nests. The male betta will guard its nest and will wait for (or find) a female betta to spawn with. Soon after spawning the female betta fish releases eggs. It is the male betta fish’s job to swiftly capture the eggs in its mouth and place the eggs securely into the bubble nest.

Betta Fish Bubble Nests

Why are the eggs kept in a bubble nest?

In the wild betta fish habitats are often quite dirty, shallow, puddles without much oxygen. Securing eggs inside bubbles means that they are kept moist and are surrounded by oxygen-rich air – and this is why betta fish build bubble nests.

Aside from releasing the eggs, the female betta fish do not play any role in raising or protecting the young. It is the male’s job to fight off any potential threats and to guard the nest (and especially the eggs). If any eggs fall from the nest they pick them up and secure them back into place. The eggs will hatch after a few days, but the fry continue to stay under the bubble nest’s protection until they can survive on their own.

How often do betta fish build nests?

Betta TwitterWell you have learned the reason betta fish build bubble nest is because it forms part of the breeding process. However bubble nest building comes instinctively to the male betta fish even without the presence of a female.

Almost all males will a blow bubble nest from time to time, with no other reason than it having a natural urge to do so. If you do see a nest in the tank it is a very good sign that your betta fish is happy and healthy. However there isn’t a ‘normal’ time frame or a ‘normal’ size for bubble nest building. Each individual betta fish has a different pattern.

Sometimes a betta fish will build bubble nests weekly or monthly (or daily) and sometimes these nests will be nothing but a few bubbles whereas other times they may be up to an inch thick and span a full corner. Don’t worry too much if your fish doesn’t build bubble nests, it doesn’t have to mean that it is unhappy or unhealthy. There are many factors at hand, health, water parameters, age and the individual fish at hand.

Betta Bubbles

Betta Tip: A reason your betta fish may not blow a bubble nest is that the filter of your tank is causing too strong a current at the top of the tank

How to encourage bubble nest building

A few factors that will create the best environment to promote your betta fish to build a bubble nest:

  • Ensure your filter is set to a gentle flow – especially if it causes a current at the water’s surface
  • Floating ‘debris’ – such as Amazon swordplant leaves or even the lids of plastic cups will often end up with a bubble nest underneath
  • A very warm temperature – ensure your tank is heated to 78-82 degrees Fahrenheit
  • Clean water – betta fish in need of a water change will often lose interest in building bubble nests
  • The presence of a female (or a strange male) betta fish will also increase the urge for a betta to build a nest

In the end, bubble nests are interesting to observe, a good sign of health and happiness but not necessary unless you are breeding betta fish.

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Thank you to @hprincessw @Ingridvpty @_KaylaJoy_ @KatieBeltrame and sorry if you submitted a pic and it wasn’t used! Maybe next time! 🙂

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Click Here to Leave a Comment Below 130 comments
Chris - March 28, 2013

I think it’s kind of cool that they make these little nests. Do you think that the betta fish does this while it eats though? I swear my betta fish do this while they are feeding.. but maybe they are just stirring up bubbles sort of say. What do you think?

    @BettaInfo - March 28, 2013

    He is probably just creating bubbles accidentally whilst trying to get the food from the top as opposesed to actually trying to create a nest 🙂

      Cythia - October 12, 2015

      Should I clear away these bubble nests or should I leave them?

    leonardo - January 1, 2014

    I only have 3 large siamese fighters black,red and yellow and only two have create nests but I have a problem breeding them as time passes I have 28 siamese fighters in all

Marisa - April 2, 2013

My betta had built up a great bubble nest over the last three weeks. It took up a quarter of the tank! But yesterday morning I came in and it was completely gone! Is there something wrong with my betta?

    @BettaInfo - April 6, 2013

    No nothing to worry about there! Do you know how it disappeared?

      Bob - July 27, 2013

      Most like the air escaped. Usually males make bubble nests when ready to spawn or have seen a female betta fish

    Arianna - June 3, 2014

    No it justs means it is preparing to mate and have children with a female betta fish

brittany - April 17, 2013

I had just got my betta 3days ago. Everything was fine. Then this morning i realized that my fish had bubbles at the top of the tank? Im prettt sure its a male. Is this normal? What should i do or should i do nothing?

    @BettaInfo - April 17, 2013

    Completely normal. It is a good sign that your male betta fish is happy and healthy! So it is good news.

    Loads of information literally on this page – look no further!! haha 😉

Afrika - April 22, 2013

So I have 2 females and a male all swimming in my tank, they seem to get along fine. I’ve had them for about 3montbs and there is no damage to them! I’ve noticed one of them getting fatter (pouch on underside) which has seemed to reduced this morning and there is a bubble nest. I was wondering if eggs have been laid? I thought he’d build a bubble nest long before they are laid?! If there are eggs what do I do now?? How do i care for them? Separate the f/m fish? How do I clean the tank? How long until I can notice the fry? Can I sell them? At what age?

    josie - July 17, 2013

    When the females arent fertile anymore the male will try and kill them theyre supposed to be seperate D:

megan - May 1, 2013

My male and female mated last night and he put all the eggs into his nest. However this morning all the bubbles had popped and the eggs where on the floor. He was tending to it all night so I’m not sire how this happened. He was so proud of himself.
There isnt a current amd the filter is off…..why would this of happened? He keeps trying to put his fry back up and the bubbles eventually pop again. Will we end up with babies or not? Do they need to be on the surface at all times to survive?

    @BettaInfo - May 4, 2013

    Hi, The eggs can hatch without being in the bubble nest. But sometimes the male will eat the eggs or they wont be cared for as much.

    Sorry its been a few days since you wrote your comment and me answering, can you confirm if you saw any betta fish fry / babies?

    Hope so 🙂

Niamh - May 9, 2013

I have a male paradise gourami and he was recently added to a bowl on his own. Which he loves as he’s started making a bubble nest!It’s nothing major but I was just wondering what happens if I don’t get a female? Will he keep building it or will it affect him in any way?

    @BettaInfo - May 10, 2013

    Nope nothing will happen! Its just a natural behavior betta fish have! They love blowing bubble nests. It’s a great sign that you betta fish is happy and healthy!! Thanks Niamh 🙂

Miley - May 12, 2013

I got a male betta fish 2 months ago and I was wondering if he’s making all those bubbles that I should buy a female one so they could mate what do you think? The bowl is only 1 gallon though.

    jade - June 8, 2013

    i dont think you should me and my brother both ave a female and male and all they do is fight

      Hayley - February 26, 2014

      Yes, when you get a female, introduce her slowly to him, wether with a tank divider or a clear glass. If they are compatible they will flirt, he will dance with her and try to impress her by pushing forward his front gills (which with another male is a sign of aggression), he will build a bubble nest and if she is dark in colour on her body, you will see clearly vertical stripes, but barely visible for white females. When first introducing them together keep an eye on there behaviour, if its overly aggressive take a step back again and separate them where they can still see each other. Before mating its very slightly aggressive, before he wraps her up.. If they are swiftly darting around a lot then that’s too aggressive. Take your time, and not all are compatible. You will see the front of her will be swollen and her egg dot protrudes more then usual, then she is ready

Athi - May 15, 2013

Betta fish related:
what will happen if the bubble nest breaks after the eggs have been laid. will the egg fall off and die? and if breaks after the eggs have hatched ??

    @BettaInfo - May 18, 2013

    The eggs may or may not die, they do not need to be in the bubble nest to hatch. Some breeders take the eggs away to hatch on their own, in a seperate tank. It may stress the male out though if he is constantly trying to look after the eggs in a bubble nest and they keep falling to the floor.

tara - May 19, 2013

I actually named my fish bubbles cause thats all he’s done sine I got him about a week ago! I was curious why now I know he’s happy and healthy 🙂 yay

Tiwana - May 21, 2013

Hi I need your advice. I recently got a male betta ( B-Red) and I thought he needed a neighbor, so I got Blue (in a separate tank). Now B-Red acts all agitated. No longer coming to stare at me when I approach, and not eating like he did before. In stead he backs up slowly, hides, or swims around crazily, and eats after I move away. Now The tanks are separated 4 inches apart with stuff in between so they are not really seeing each other, as I thought he did not like that I got another fish. But he is still acting shady. Can you explain why he is no longer friendly, hides, or acts agitated. Meanwhile, Blue is chillin, like he used to at first. They are both in 1Gal tanks. Please advise.

    @BettaInfo - May 21, 2013

    Sounds like he got stressed when he could see the other male and felt threatened. Sometimes betta fish can be stressed / take a litle time chilled out before coming back to their normal selves. Hope he gets well soon!

Alyssa - May 21, 2013

Hi there !
We have a very pretty blue male Betts named Carlos . He is in a 2 gallon tank by himself . His bubble nest is almost the entire surface ! Do bubble nests ever mean they are sick ? Just wondering because his nests have never been so large .

Indrasis - May 30, 2013

My Male betta fish made bubble nest . I kept two male betta fishes using a divider. The bubble nest kept on increasing for two days. I then did put a female betta there in the tank. But the male started attacking it frequently. I then removed the female and put it in the other tank(Replacing the other male to another tank) so that male can see it. IS there any chance that Male will prepare the nest again and they breed?

    Marissa - November 2, 2013

    Yes they will probably get ready to mate again. First give them sometime to get used to seeing each other. And maybe the female wasn’t fertile. make sure she has stripes.

A.John Peter - June 3, 2013

Let me know Why some male Bettas are eating their eggs

    @BettaInfo - June 4, 2013

    Well most don’t, the male betta fish pick up the eggs in their mouths and take them to the bubble nest. Sometimes they keep them in their mouths for a little while so it looks like they have eaten the eggs. Every now and them the male betta fish may get confused and eat some eggs but this is rare and there is no real reason for it.

Eavan - June 4, 2013

Phew that’s a relief, I though bluey was sick. But will he pine to mate? He’s in a little square tank all alone. I hope he’s happy.

jade - June 8, 2013

we keep removing are bubbles but are fish keeps making more he has been doing it ever since February 23 2013. so last week we got a female and the female we moved to a different tank from the males after they had a baby but the male is not looking after it.

Jennifer - June 26, 2013

Hi, we just got our 3 year old daughter her first fish.. a male betta. We have had him since Sunday and I just noticed he created a bubble nest. I know this is completely normal, but my question is.. do I leave it or clean it out? Also, is it common for them to stay by the nest?

He’s the only one we have and we won’t be mating.


    @BettaInfo - July 6, 2013

    Hi Jennifer, thanks for leaving a comment and sorry for late reply – I have been away a little while.

    Perfectly normal, I would leave it, it is also a kind of territory mark for him, he wont like it if you break it (though its not the end of the world if you do). And yeah, they quite often stay by the nest, your comment and questions sound completely normal behavior for betta fish and bubble nests.

melanie - July 3, 2013

Ok my male betta fish layed bubble nest and I want to get a girl can I do that get a femal and but it with the male

    Letisha - July 30, 2013

    You can get a female but only put it with the male when breeding. Sometimes the male kills the female or the other way around.

Aya - July 13, 2013

Hi, I’ve had my betta for two months now and he’s been making bubble nests ever since I got him. Every time I clean out the tank, his nests get bigger. I was wondering if I should just leave him as he is, but would it make him happier if I mated him? And do they go through the while egg thing only once in their lives? How long does it take for the whole thing to happen ( mate, lay eggs, eggs hatching, frys being able to swim theirselves, and seperating the female and male frys)?

    @BettaInfo - July 13, 2013

    I wouldn’t recommend mating your betta fish unless you know what you are doing. He is happy enough making nests and protecting them. Mating betta fish can often end up in injuries if not done properly.

    If you still want to find out more on betta fish breeding there are some good videos on Youtube.

Letisha - July 30, 2013

My betta blows small nest and doesn’t care much about it. Should I be worried?

lina - August 1, 2013

Had my betta for a year and wow his amazing. I clean his water every week and he overnight builds a nest and stays until the next cleaning. Current nest is biggest I’ve seen, stretches along the side and back of 15-20L tank all the way around!! Crazy fish he is :)))

Willy Huynh - August 5, 2013

Why my fry are nearly all dead after just one night, even when they are more than 01 month old ? When they hatched, I guessed there must have been a thousand of baby bettas. Then after 01 month only less than 01 hundred could survive, and then after 01 night they were all gone. Can you tell what happened to my baby bettas ?

more than all the fish in the sea. - leaner by the lake - August 5, 2013

[…] bowl or how he watches us cook dinner in the kitchen. Lately he’s really into making insane bubble nests and sleeping at night under a silk betta plant we got for his bowl. Such a good […]

nate - August 8, 2013

I got a male and female in the same tank. how do I tell if there are eggs in the bubble nest? when do I take the female out with out stressing out the male. the last time I thought there were eggs I took her out right away and he ripped his nest apart???

    @BettaInfo - August 8, 2013

    Hmm… you should try breeding betta fish if you don’t know what you are doing. Check out Youtube, there are plenty of step by step videos out there.

Anil - August 9, 2013

Hello I got only one Betta fish in a tank and its has bubbles in it.
Please tell me what to do now

    @BettaInfo - August 9, 2013

    Dont do anything. bubbles in your betta fish tank is ok! Its a good sign to see a bubble nest, it means your betta fish is healthy. Your on the right page to find out more information, have a read above 😉

Letisha - August 13, 2013

My betta’s bubble nest keeps on popping.Is there anything I should be worried about?

Ashley - August 19, 2013

No 🙁 bubblenests don’t mean they’re happy! It’s instictual! Even a betta in a dirty cup will bubblenests. That doesn’t mean he’s happy OR healthy 🙁

    @BettaInfo - August 19, 2013

    Hi Ashley, Thanks for joining the betta conversation! 🙂

    Bubble nests are definitely a naturally occurring instinct of a betta fish. However, this behavior is generally a good sign of health and happiness. Its not a 100% guarantee that the betta fish is healthy and happy but it is a very good sign. 🙂

      tasha - August 23, 2013

      Betta naturally live in the muddy waters of Thailand, so having a dirty cup does not mean he is unhealthy. It is better to have clean water (of course) but a Betta can live for weeks in murky water. I have bred and enjoyed Betta fish for over 15 years and they are still content in water that is somewhat cloudy. I do not keep them in cloudy water often. I try to clean it at least once every 2 weeks. They are however still fine.

        Jason - September 16, 2014

        Hey, you say you’ve been breeding for 15 years, I’ve been attempting to get started over the past 4 months and every time I get my fighters together after letting him build up his nest and having introduced them for a few weeks I let the female in with the male and they do the dirty deed but they end up breaking the nest and not getting anything done, I’ve attempted this with multiple females with multiple males, can you tell me what I as the keep am doing wrong?

Gabrielle - August 26, 2013

My Crowntail Betta blows bubble nests often, but they are never as big as the ones from the pictures. That’s okay, right? I just want to make sure..

Also, a little thing I find amusing, there are parts of a plastic plant I bought him when I first got him, that stick out of the water, and he has a habit of making bubbles all around where the plant sticks out!

    @BettaInfo - August 28, 2013

    Ecerything sounds fine! Yeah if there are plants on the surface of the water that is where the betta fish will tend to create and build its bubble nest! sounds like you are having fun with your betta! 🙂 Thanks for all the comments Gabrielle, I have noticed them across the site.

Melanie - September 1, 2013

My female Betta has been making bubble nests lately. Is this unusual behavior for a female? She seems very happy and always greets me with a gill display when I talk to her.

Gaige - September 2, 2013

My male crowntail betta blows bubbles, but they pop after a few seconds! Does this mean he is trying to make a bubble nest?

Worried - September 9, 2013

I tried to breed my male and female betta,but the female swam at the top of the tank and destroyed my males bubble nest. I dont know what to do? Help!!!

Mikayla - September 23, 2013

I have a question regarding the breeding of betta fish.
Once the female betta gets squeezed and starts releasing eggs, does she have to finish releasing all 70+of them before being taken out? Or can she be taken out after releasing like 5?

Please let me know!


    @BettaInfo - September 26, 2013

    You should let all the eggs be released so that they all (or at least a lot of them) will be taken to the bubble nest to be protected by the male betta fish.

Rendy - October 4, 2013

Hi I hope you can help!

My male betta is not making bubbles but showing interest by flaring at the female which is in a bowl inside the breeding tank. How long does it usually take for him to make these bubble nest? The female looks to be ready and is already fat with vertical stripes…I’m only planning to release her with the male when he has already made the bubble nest…I’m afraid if he takes too long and i dont release her she will lose her moment…is that possible? What should i do?

Great website btw!!!

    @BettaInfo - October 4, 2013

    Thanks for your comments about the website! 🙂

    If the water is flowing strongly that can put a betta fish off. You could also try floating plants which will act as a nest area.

hi - October 11, 2013

i have no idea what my betta fish are doing my female is at the bottom and if she comes up the male races around her and she goes back down. This has been happening for two days and i am worried the female will drown and i don’t think she layed her eggs yet.Plus i give them food but the female won’t eat

    @BettaInfo - October 11, 2013

    The two betta fish should not be in the same tank. The male is very territorial of the bubble nest and they will fight.

CHERLIN - October 31, 2013


My betta fish haves eggs and now are in stage white color ,should i took out the betta fish and let the eggs alone?

Marisabel - November 25, 2013

My betta managed to make a bubble nest within the first day of me purchasing him. I cleaned his tank 6 days after and he was in the process of making a new one.
Since then he has made a new bubble nest every 2 days and is trying to connect them daily. Is that normal?

Samantha - December 4, 2013

Hi, I just got a crowntail beta yesterday and he has bubbles along the rim of his tank. Is this him or just natural bubbles?

Roachy - December 15, 2013

I noticed yesterday that my beta tank has big bubbles scattered around the surface. Not anything like a bubble nest. Never saw him do this before. I gave him blood worms for the first time a couple days ago, he doesn’t seem interested, but ya….any ideas?

Lori - December 19, 2013

I got a live plant to put in with a betta and didn’t get all of the fibrous cotton like stuff that’s around the roots off before I put the betta in well he is blowing his nest with little pieces of that stuff in it which he defends like they are eggs. I wanted to share that. Around here it’s just strange that a male will clean.

Abby - December 21, 2013

I just got my betta fish today. Its a male named Detective Buebbles but we call him Buebbles for short (Yes it is spelled right). Anyways he keeps like blowing bubbles around his tank. I hope he is fine and I really like him.

P.S Say Hiii

Siobhan - December 23, 2013

My betta has been unwell for about a week now, he’s my first one but had him for almost a year, we have a wonderful relationship. He has a swollen belly and has appeared to experience swim bladder. A few days ago he was losing balance and tipping all the way over and seemed almost disorientated. I’ve had him in a hospital tank, and thought he may be constipated( this is what I’m truly wishing for and not anything more sinister) he has Definately improved over the last 3 days and is now making bubbles again along the top, however his tummy is still swollen but physical appearance is perfect. Good colour, fins and eyes. He as slowly become more active. I have cut his food to less then half for 3 days. He still seems uninterested. I have also added daily treatments of antibacterial therapy to the water as the fish shop thought it could be an ulcer or tumour

    @BettaInfo - December 27, 2013

    Hi Siobhan, thanks for sharing your story! It sound like you hav identified and then done the right thing! Good work 🙂

Shaka44 - December 24, 2013

Hi, I have a male and a female crown tail beta in the same tank and there was a divider but we took it out and now they are sitting on the bottom of the tank almost looks like they are snuggling. I was wondering what that means, what they are doing, and if something is wrong.


renee - December 31, 2013

I have two beta fish. Male and female. I have a divider and the two are in the same tank. I have a crucial bubble next but I am afraid that if I let them together he will kill her but I want babies. What to do?

    @BettaInfo - January 1, 2014

    Breeding betta fish can lead to injuries and fights. I would only do this if you have experience. There are plenty of videos on YouTube that take you through the steps, however I wouldn’t recommend it. I hear too many stories where the male has seriously injured the female.

    crystal - January 7, 2014

    hi, does your female have eggs? you can tell if her belly is big and she has a white dot on the bottom of her belly. just put her with the male, you have to try, the male will be aggressive with her at first, but if it gets too bad then remove her. my male was aggressive with my female, she just ran away and hid, but they finally mated, they latched to each other over and over and it went for over an hour, but she was ready, her belly was full, and she released her eggs. they BOTH put the eggs in the nest, she had hundreds of eggs, but unfortunately, the nest didn’t hold them and they are all lying at the bottom of the tank, I’m sad because I don’t know if they’ll hatch. so you just have to put her with him and watch closely.

Scott - February 9, 2014

Hi. My betta is making a bubble nest and taking the air out from the air and putting it in his bubble nest. Is that normal? (His name is Basweiler) I might have already sent this. I’m not sure…

    @BettaInfo - February 14, 2014

    Completely normal! Betta fish cab breathe from the air at the waters surface, that’s what you are seeing him do.

macey - February 16, 2014

I’ve had my betta for about two years now and he use to blow bubbles, but doesn’t anymore should i be worried?

Richard - February 24, 2014

I have 2 bettas 1 female and 1 male I put them both together and both flared their gills but did not make any threating moves. I seperated both of them and the male calm down in a few minutes but I had to take the female out and put her in another tank before she would calm down. since they did not make any threating moves towards each other do you think they would have gotten along with each other after awhile or would it have stressed them to death?

Micah - April 21, 2014

Hi I have had my male betta fish Murphy sometime last year and I have had female betta fish Murph for couple months and their in the same tank that they were in when we got them and we do change the water with betta fish water and I know their HAPPY and HEALTHY!!! But Murphy just started making a nest. But how is it possible because they are in different tanks! So I don’t know if Murph is breeding because she has no strips and so can you give me an answer very very very very very SOON PLEASE!!!

bogart - May 16, 2014

can i feed the male betta while he was protecting the eggs?

bettafishhhhh - June 10, 2014

My male betta fiah keeps making bubbles after I clean his tank. I know this means he’s happy ( horny ) and I was thinking I should buy a female betta fish any tips on how to buy a female fish thats ready to mate ?
Also should I breed them in 1 gallon tank or should I get a bigger one and exactly how big. I’ve done alot of research and can’t wait to make him happy with a female betta!

slenderssss - July 13, 2014

Hi . my betta male makes bubble nest yesterday but then I transfered him to a bigger tank to prepare him for breeding . then he seems sick when I transfered him . I waited till he recovers then I introduce a female betta beside his tank. He sees it and flares to the female and the female swums crazily upward and downwards . but the problem is the male seems tired of making bubble nest which is essential in breeding . what should I do ?

NEW BETTA OWNER - July 29, 2014

(Im sorry i know this has NOTHING to do with this post but…) i just came in from a day of swimming and checked on my Betta (Vail) up by his Bubble nest like always i looked at him AND HE FLARED AT ME he stopped like he noticed it was just me and went on with his swimming i’ve had him for 3 days now he hasnt done this his nest it pretty large so i know he’s healthy and happy please tell me is this normal???? Please get back to me when you can Thanks~

Betafishy - August 1, 2014

I’m so excited because, I got my Beta fish about 3 or 4 days ago and he made his first bubble nest today 😀

Danny - August 7, 2014

Hi. I got a male betta about a week ago and a day later he started building fa bubble nest, so I decided to go get him a female. I put them together but separated through a transparent plastic. They started flaring at each other and the male started showing a lot more interest In building the bubble nest and the female had vertical stripes (signs of eggs). But before I could clean the tank out, the nest was built around the edges about half an inch the next day. I was wondering if its okay to clean out the tank so it can be clean for breeding?

maya - September 16, 2014

Dear Betta parents, how do I know when the male is already coaxing the female? When & jow long do I leave the male & female from the tank? I don’t know if the have been coaxed or not. Please help. Thank you.

    Victorian - April 13, 2015

    Well you should know when is coaxing her when you see him flaring his fins and chasing her around the tank.
    – hope this helps

Jenna - September 16, 2014

what if you have a bubble nest but your fish isnt a male and its obviously a female because it has the pregnant looking abdomen and the white dot?? im super confused! help

    @BettaInfo - September 20, 2014

    Don’t worry about it female bettas can create bubble nests too! 🙂 Much more common for male betta fish to blow bubble nests though.

Alesia - September 17, 2014

I have my betta “Robin” in a 5.5 gallon, is that too big & how often should clean the tank?

    @BettaInfo - September 20, 2014

    5.5 gallon is perfect! I bet he loves swimming around it! Get a few plants and it will be perfect for him. Do weekly cleans of 25% of the water. 🙂 Hope this helps.

Nicole Rojo - September 22, 2014

My male betta had a bubble nest but now all the eggs are in the bottom of the tank what can I do the help the eggs?

Nicole Rojo - September 22, 2014

please help have male beta who made nest and has eggs in nest and now that the female is no longer in the tank he is has let all the eggs sink to the bottom and is not fixing them what can I di to try and save the eggs

jackieavila15 - September 23, 2014

Hi, I have read this article over and over again it is always saying how males make bubble nests when a female is present, or when theyre happy but I recently bought two betas and they both were supposed to be male, at first they were separated by bowls but now theyre only divided by a small glass. What’s surprising is that one of them has made a pretty big bubble nest. And the other has made some bubbles as well, what does this mean??. Should I get a female?? They’re both supposed to be males.

Sadie - October 5, 2014

I got my betta fish yesterday evening, and he has already made a bubble nest!!!!!! Part of it has already started to pop though……. I just wanted to know if that was okay

Fenil - October 6, 2014

I got a betta one month a go it has developed a fat belly and it is kept with gold fishes should I keep it different from them?

    @BettaInfo - October 17, 2014

    Ok, it sounds like you are feeding it too much! It will get very sick (sounds like it already is).
    Please keep it seperate from your goldfish – more information here. They should not be eating the same food or have the same tank set up.
    Thanks! 🙂

Lisa Nicole - October 9, 2014

Hey there ! I just got a female betta and I was wondering if it was a good idea to leave the two different tanks together or not? I want to breed the pair too.

Bluebettalover - October 14, 2014

Hi i think my male veil tale betta thinks im a female betta fish because every time i get close to the tank he will swim up to me and press out his gill flaps like he is showing off also thanks for the bubble nest info it was very helpful 🙂

NicoleS - October 17, 2014

Hi, I got my betta about a week ago and he has eaten like a little piggy every day. This morning when I fed him he didn’t eat. He just sat in a corner. I figured maybe he wasn’t hungry so I went to work. When I got home he still had not eaten but he had blown a bubble nest. I’m very happy that he will make his bubble nest but should I be worried about him not eating?

Professor Bubblesworth is in a 2.5 gallon tank by himself. I hope he is happy 🙁

KK - October 18, 2014

I am thinking about getting a betta and putting it with other fish should I take any precations, such as feeding and what if he makes a bubble nest should I be worried

Jacquie - November 6, 2014

Hi, I have a male betta who occasionally makes bubble nests I didn’t now what they were until now he is fed a little more then he is supposed to 9(only one pellet more) with an occasional treat of blood worms does his diet effect his bubble nests? also does the male betta raise the young?

Aishoo - November 10, 2014

i just got my first male betta (i call him Alpha ^-^ ) two days back and he was making bubble nests the very next day.. i first thought it was vomit and that he was sick, thankfully now i know that its normal n im really glad that he is happy n healthy <3 … its just that he keeps building these nest n protects them really well.. he is not so agressive though … stays still a lot and moves away when i touch the glass.. i feed him daily ( should i increase it to twice a day or something?) … and he seems awfully lonely .. should i get him a female friend? i really want alpha to be happy, he is really majestic n beautiful.. pls give some advice ..

    @BettaInfo - November 10, 2014

    Great story! Thanks for the comments.

    Betta fish are territorial and like their own space so dont worry too much about that. Feeding him daily is fine too! 🙂

Tracey - January 14, 2015

I have had my betta couple for a year now. Christmas eve they had their dance ( he swirled & swirled round & round her ). The female looks like she is gonna explode any minute now & he hasn’t built a bubble nest for her yet ??(January 13th) ?? Should i be concerned & if so what should I be doing for them??

Nicolas Rodriguez - February 6, 2015

Hi everyone!!!

I got my first Betta, he is a dark blueish color. I put him on a 10 gallon tank. But I was wondering if I could purchase other fish and put them with him? the tank looks so huge compared to him.

Hope any of you can help.

Thank you.

    AccaliaJay - February 8, 2015

    I’ve never had more than one betta or fish however I do enjoy looking things up. And if you have enough decoration and plants I’ve seen that people can even manage to fit 5 guppies in with a betta in a 10 gallon. It just takes time and patients. They say you should introduce the non aggressive fish to the tank first so they can find all the hiding spots and then use a breeder box to introduce your betta to them. Hope I helped! I’m thinking of introducing my betta to some guppies when I get a 20 gallon tank

James - March 5, 2015

Question. I bought 2 female bettas and I put one in a container beside the male I already had. I separate them with a piece of paper so they can’t see each other but when i remove it the male flares at her like he’s supposed to but the ‘female’ is like 3 times as aggressive as he is….even slamming ‘herself’ into the side of the container to attack him. I checked for the typical female betta signs…’she’ has a biggish stomach and short fins but ‘she’ doesn’t have the little white dot thing that the other females have. And on top of that ‘she’ blows more bubbles than the male does. Is it possible that ‘she’ is a ‘he’, or some kind of transgender betta or something crazy like that?

corina - March 6, 2015

Hi! I got my betta 2 weeks ago tomorrow and he seems very happy. He’s got two tiny bubble nest in 2 corners of the aquarium and a huge one in opposite corner of the current. the thing is, i’ve observed in the first few minutes that the current was a bit too much for the little guy and i’ve tried to improvise a way to fix that, so basically i tied cut off finger of a surgical glove on to that pipe where the water comes out of and put a tiny hole in it.
My fierce male seems to think that my cheeky improvisation is a female…i’ve observed him trying to mate with it for a few days now (multiple times a day he’s a total wanker)
My question is is that slimy thing i’ve been observing in this last few days sperm? i know it probably sounds stupid to you but it looks disgusting! btw i changed the water 5 days ago so i guess it’s not poo.
I’m bot even sure he’s mating to be honest… it’s like he’s hugging the glove…should i change the water more frequently or is it normal for the slimy stuff to be there?

jean baum - March 26, 2015

my male is making lots of bubbles but not areal nest at the bottom of his bowl there are little egg like things..not food because i feed him the little pellets and only one at a time so I know that he eats them..can a male lay eggs?what can these things be? not poop because that’s stringy….

Victorian - April 13, 2015

I just got my beta fish three days ago it has already started a nest .I know what it means I just want to know if I should buy a female for him to mate. Also if I do what’s the best way to introduce them.

Help me out here please someone .

Jackie - May 30, 2015

I got a new fish yesterday and found him bubbling… At first I was worried as he wasn’t interested in swimming around but stayed behind the plastic plant. But when I had a closer look I found all those little bubbles along the side. So this is a good thing, right? How likely is this to happen the day after you introduced him into his new home? I’m a bit over cautious as my first betta died 3 days after I got him…

Amy - May 30, 2015

Hi All,
I’m new to being a fish Mommy. I found a beautiful Half Moon Betta (Zuko cause he’s a pretty boy). Which for the first two weeks I had in a large bowl/vase along with a very small pluko and a live plant. The pluko died after only a week and the live plant couldn’t survive the tank changes which were happening every few days due to that messy pluko (I also had to put a mini submersable heater in there which added to the mess) at which point I got a 5.5 gallon tank with a filter and light, added a bunch of fake plants, took out the heater and did a LOT of reading. At first he was hiding out in one corner of the tank and I realized the filter was blowing him all over the place. I did the water bottle fix to the filter and he loves it now. Zuko’s been in his new Aquarium all by himself now for about 5 days and I noticed a huge (about the size of a softball) bubblenest at the top of the tank this morning. He’s also been flirting and playing with me when I sit down at my table (the tank is on my kitchen Island right next to my table so we are eye level then) When I turn all the lights out at night and turn on his tank light he starts to really play and enjoy his tank. And today he was playing with me over breakfast. I love this little guy. So glad to hear it’s a good indication that he’s healthy and happy. Thank you for all you posters out there. I find all the information on the internet so valuable when trying to learn.

Baker - August 10, 2015

What do you do when you need to clean your tank and there is a bubble nest there?

Leo - January 7, 2016

Very good article on Bubble nests. Well, this confirms it, my male Betta Fish is happy, healthy, loves the water condition and the live plants in his 10 gallon home… he is already blowing bubble nests, and its only been 5 days since I brought him home, and 4 days since I introduced him to his new home.


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