Why does betta fish’s stomach explode?

In this article, we will answer the question “Why does betta fish’s stomach explode?”. We will also discuss the most common causes of betta fish’s stomach explosion and how to avoid it.

Why does betta fish’s stomach explode?

There are a few primary causes behind this. It’s all about how the anastomosis isn’t kept up to date. This problem is frequently caused by a failure to maintain sufficient hygiene in the environment where your fish is maintained. A bad diet is another factor. Bacteria will develop up in your fish if you feed them an imbalanced diet.

Stomach explosion due to ulcers

This is not very common, but when it happens, it may be pretty frightening. Helicobacter pylori are the bacteria that causes stomach ulcers. There are examples of this all around the world, with the United States and Europe being the most prominent examples. The microbes are responsible for the ulceration or sores that appear on the exterior of the fish’s stomach. When this happens, the germs in the affected area will begin to multiply. This might cause the stomach to become irritated and damaged over time. 

When pathogens cause illness in the internal tissue of a fish’s stomach, they normally force their way to the fish’s esophagus where they can cause harm. It will continue to multiply from there until you reach an anastomosis. The anastomosis can escape here, and the illness spreads throughout the body of your fish. When this happens, your fish will most likely be lifeless. 

As a result of the explosion in the stomach of your Betta fish, you will detect that your fish has established a fever. Because the bacteria have into the esophagus, this is the case. It could just be acid reflux, or it could be something else entirely.

Stomach explosion due to TB cyst

A bacterial infection known as Staphylococcus aureus in its liver and spleen could cause a variety of health problems. Because it contains many amino acids that bacteria require to flourish, the spleen is a jackpot for bacteria. The difficulty is that the infection’s poisons can spread throughout the fish’s body instead of remaining in the liver, where they are needed. Because the toxins did not stay in the liver, the organ’s body began to break down. 

These extra toxins will begin to pile up in its kidneys, causing inflammation and maybe causing its stomach to rupture owing to tuberculosis. 

Because Staphylococcus aureus is always present in freshwater, your best will be exposed to this opportunistic bacteria regularly. Bacteria will damage your fish’s immune system if it becomes ill. Staphylococcus aureus causes the stomach of your betta fish to explode. 

There are other ways to keep Staphylococcus from affecting your fish once you’ve gotten the bacterium under control. 

– It is important not to place excessively food in the tank since this will provide food for germs.  

– Keep your filter clean and clear of bacteria by cleaning it out regularly. 

– Make sure your betta fish eats all of the food you put in your aquarium; your fish will appreciate it!

Stomach explosion due to bloating or gas build-up

The internal organs of your Betta fish might be severely harmed by gas or carbon monoxide. When the levels of this gas reach dangerously high levels, your Betta fish may begin to act out and display signs of distress, including gassy behaviour, tail drooping, and even a tail fluke. 

This is a sign that the inside organs are beginning to feel the impact of being attacked by this toxic gas and are attempting to expel it. This is why you need to keep a constant check on the gas levels in your tank. 

It is critical to respond swiftly if the gas level increases beyond a certain threshold, otherwise, your fish could develop severe organ dysfunction, which could be deadly to them. Gas or bloating in your Betta fish could be caused by several factors. A change in nutrition is one of them. Another example is a rapid rise in the amount of food consumed. Stressed-out fish are especially vulnerable to fluctuations in their food habits, which is why they should not be eaten. 

When you feed your Betta fish, you could notice that they behave in an unusual manner. As a result, their stomach is constantly working to accommodate the additional food. Consequently, the quantity of gas generated by your betta fish may become excessive, perhaps leading to the stomach of your fish bursting or other vital organ failures. There are a few basic things you may do to reduce excessive gas production: 

To begin, only feed your Betta fish a small amount of food at a time so they don’t become confused about food sizes. Then, monitor the water conditions and add more aquarium amounts of salt as necessary to maintain the gas levels at a minimum.

Finally, there are a few simple things you may do to assist your fish to avoid gas or bloating entirely. These include removing parasites from the tank (which will aid in preventing waste products such as ammonia from accumulating) and ensuring that your Betta fish gets adequate exercise on a regular basis (see below). 

Due to parasite assaults, there is a stomach explosion. 

A highly serious condition develops when the hatchlings and the larvae start to move around inside the fish’s body; this is known as the worming stage. With millions of additional minute bugs joining the fray, the worm will begin wreaking havoc on the fish’s secretory glands and other vital organs. 

The can betta fish may suffer from a serious and perhaps deadly condition if this is not addressed immediately. Parasitic worms, cantharis worms and bugs, and catharsis bugs are among the worms that cause betta fish ailments. These parasites must be treated or your fish’s health and survival may be jeopardized. 

Diarrhea is a common occurrence in betta fish. Sick fish don’t have much of an interest and will eat anything that is put in front of them to keep them alive. This may be both advantageous and detrimental, based on how much the fish is able to ingest at once.

Tapeworm infection in a betta fish’s stomach can be fatal, so it’s important not to overlook it. Once you’ve found the issue, you must act quickly to resolve it, or the consequences could be fatal. Tapeworms like catharsis and cantharis flourish in unclean, clear water with high protein content. Such tapeworms can also anchor themselves to an inner pipe that the fish utilizes to obtain nourishment from its surroundings. 

What can you do to avoid a betta fish stomach explosion?

There are a few things you can do to keep your Betta fish from having a stomach explosion

– To begin, be sure to refill your water on a regular basis. Water that has been chlorinated should be stopped at all costs. This has the tendency to increase mucus production, which attracts the germs that initially caused the disease. 

– Next, check to see if your tank has a decent filtering system. Remove all algae, rocks, wood, and anything else that could aid in the development of a bacterial-friendly environment. 

– Finally, you should make sure that the water in the aquarium is always circulating. This prevents the germs from becoming out of hand. This therapy procedure might not be right for everyone, but it’s worth a go.


In this article, we answered the question  “Why does betta fish’s stomach explode?”. We also discussed the most common causes of betta fish’s stomach explosion and how to avoid it.

If you have any questions or concerns, please let us know in the comments section below!

Frequently Asked Questions (FAQs): Why does betta fish’s stomach explode?

Can a betta fish die from overeating?

You don’t have to worry about fish exploding if you eat too much because it’s a myth. Excessive eating, on the contrary, is associated with a number of health problems. Some fish species have the potential to develop fatty liver disease.

How do I tell if a betta fish is overfed?

You’ve fed too much when you observe flake food laying on the bottom of the tank with no fish eating it. If the flakes are not devoured within a minute or two, they will soften and degrade in the tank’s bottom. The flakes will eventually form a decaying sludge layer in the gravel.

How do I remove the excess fish food in my tank?

Using an aquarium gravel vacuum to remove uneaten food from your betta tank gravel is the best way to do it. Gravel vacuums are frequently found at pet stores and online aquarium vendors. These tools use a siphon effect to remove trash from your tank gravel, such as uneaten food.

Why is my fish fat?

As a result of his nutrition, a fish may become fat or swollen. Constipation and other digestive problems are frequently caused by overeating or eating incorrect foods. You might try feeding your fish less or better foods, which differs based on the fish species.

How often should I offer food to my betta fish?

Most of the time, feeding your betta fish once or twice a day is plenty. Some hobbyists even give their fish a one- or two-day fast once or twice a week to allow their digestive systems to rest. Fish that are larger and more sedentary can go longer between meals than fish that are smaller and more active.

How long can you keep a betta fish alive without feeding it?

Betta fish can go without food for up to 10-14 days. Prior to abandoning your betta fish for a lengthy period of time, however, there are some critical aspects to take into account.


5 Possible Causes OF Betta Fish Stomach Explosion. https://bettafishworld.com/5-possible-causes-of-betta-fish-stomach-explosion/

Betta fish stomach explode. 2021. https://themindfulmum.com.au/wp-content/oog7nz/betta-fish-stomach-explode-36e503

Can A Fish Explode From Eating Too Much. https://bikehike.org/can-a-fish-explode-from-eating-too-much/