Betta Fish Sickness

Your betta fish may wind up contracting any number of diseases and ailments. It’s also a good idea to be ready even if there’s a strong possibility they’ll be alright for the most of their lives.

Therefore, if you’re wondering what issues your betta could encounter or if they already have a problem, you’ve come to the perfect page.

This page will inform you of all the most prevalent and less widespread ailments and diseases that your betta may contract, as well as what you can do to treat them.

Fin and Tail Rot

As the name implies, betta fish with this condition have problems with their fins and tails. It may be brought on by fungus or bacteria. Due to decaying, the fins and tail appear to melt away or change color.

By keeping the fish’s habitat or tank clean, it may be avoided.

Antibiotic-containing drugs, such as trimethoprim, erythromycin, and sulfadimidine, can be used to treat fin and tail rot.

The mortality rate is moderate with proper treatment.

You may have tried drugs like Tetracycline, Jungle Fungus Eliminator (JFE), Maracyn, or Melafix if your fish experienced fin and tail rot. However, the fact is that these drugs don’t really work very well at curing this sickness, and some of them might even kill your fish.

JFE hasn’t worked well for me, and the other drugs didn’t help at all—in fact, they made my issue worse. My own experience has shown that a well-known company’s Hikari Revive is the best treatment for fin and tail rot.

The drug itself is a five-day course of therapy, and it is administered in accordance with detailed instructions. The most astounding aspect of this therapy is that it begins to provide benefits right away!

The product’s producer claims that it may also treat a wide range of medical disorders, including pop eye, hemorrhagic septicemia, dropsy, open red sores, body slime, mouth fungus, hazy eyes, and many more.

I would advise you to get this treatment if your aquarium has the fin and tail rot illness or any associated ailments. It hasn’t let me down since I started using it in 2010, when I first came across it.


Ich is a parasite infection of betta fish, and these organisms are almost constantly present and watching for a chance to attach themselves to a host.

The reason of the white spots on the fish’s skin and scales is Ichthyophthirius multifiliis, an ecotparasite (a parasite that lives outside the body). If treatment is not received, it has an impact on the body and eventually kills the host in almost all situations.

The first indication is a few white spots that resemble little cotton balls on a betta’s scales. These are really cysts that are home to tomites, the larval form of the parasite. In an effort to remove the parasites, the fish will also clamp their fins and brush against any surface in the tank.

You must remove your carbon filter, add an ich treatment, such malachite green, to the water, and elevate the tank’s temperature to 85 degrees Fahrenheit since ich can only be treated during the free swimming period.

This promotes the cysts’ separation and eventual rupture. The tomites are subsequently released as a result, and the water’s medication can then kill them.

Dropsy (Pineconing)

Dropsy can be brought on by a variety of conditions, such as germs, parasites, viruses, and nutritional deficiencies. It is also typical among keepers who offer live food to their bettas.

Dropsy is a sign of several illnesses going on inside the betta fish’s body rather than a true sickness. These conditions include fluid accumulation and the enlargement of organs that are failing (liver and kidney).

A severe case of dropsy may be seen from above. Extreme abdominal swelling and scales that flare outward like a pine cone will be visible. The aforementioned image and the complete video are both examples of this.

The infectious germs that caused the inside problems can damage other community tank members. The propensity of betta fish to stick near to the surface in order to obtain oxygen more conveniently is another sign of dropsy. They won’t have much of an appetite either.

Swim Bladder Disease

Swim bladder disease is a common condition that affects bettas and, if neglected, frequently progresses to dropsy.

Even though it is known as swim bladder illness, it is more of a condition. Swim bladder disease is the phrase used to describe all of the conditions that can affect your betta’s swim bladder and the manner that they swim.

Are you looking for a comprehensive manual on taking care of Betta fish? Click this!

The Swim Bladder: What Is It? Your betta’s swim bladder is the organ that gives them buoyancy control. Your betta wouldn’t be able to remain stationary without the swim bladder; instead, they don’t have to.

The swim bladder is situated behind all the other organs, which is one of the reasons swim bladder illness is so prevalent. Because of this, it frequently implies that if anything negatively impacts one of them, it will likely also negatively impact the swim bladder.


The fins sag and tear due to this bacterial infection. Additionally, it results in darkening of the gills, white spots or markings on the mouth, cottony growths on the mouth, scales, and fins. The infection and damage to the fish’s gills may make it difficult for it to breathe.

By treating fungal infections and exposed wounds, the disease can be avoided. Additionally, it may be avoided by eliminating elements like insufficient oxygen, harsh water, and overpopulation in the aquarium.

Oxytetracycline and medications comprising Sulfa 4 TMP, TMP Sulfa, and triple sulfa can be used to treat columnaris.

The sick fish may pass away in less than 72 hours if it is not treated.

Anchor Worms

Anchor worms are yet another parasite that can harm your betta. Thankfully, though, anchor worms are relatively uncommon in them.

How Do Anchor Worms Work? Lernea are a group of crustaceans that include anchor worms. They’re not worms, despite what a lot of people assume. They cling to your betta’s skin before moving inside. Once inside, they latch on using their anchor-like heads.

What Anchor Worm Symptoms Are There?
There are several signs of anchor worms, but thankfully, they are quite noticeable. The symptoms to watch out for are listed below.


This parasite illness is still another. One of the most prevalent illnesses affecting aquarium fish is velvet, which may quickly wipe off the whole population before the unaware owner recognizes what they are up against. It is brought on by one of the many species of the tiny parasite Oödinium, often known as the Rust or Gold Dust disease.

Oödinium is a dinoflagellate, which some people classify as a protozoan and others as algae since it possesses chlorophyll. Both freshwater and saltwater fish are impacted by this parasite. A gray to golden covering will cover the body of an afflicted betta. Even if it’s not always easy to notice, velvet ought should be visible in excellent lighting.

Treatment for velvet and ich are essentially the same.

Hole in the Head

Early indications of hole in the head sickness are tiny sores, dents, or pin-holes on the surface of the betta’s head and above its eyes. This condition is typically brought on by poor diet or habitat hygiene. These lesions become larger and larger with time.

These cavities are clearly apparent and usually follow the betta’s lateral line. Like other betta fish diseases, it is curable if caught early, but as it progresses, it becomes progressively fatal.


Betta fish are very gutty, therefore constipation is a very common problem for them. The main exception is that although constipation is an annoyance to humans, it may be fatal to bettas if addressed.

Constipation: What Is It? Your betta may be experiencing constipation if they are having trouble passing feces. Usually because it has been hardened within them. Make sure you’re giving your betta the proper stuff because this is primarily caused by overfeeding or a bad diet.

How Are Betta Constipations Handled?

There are several techniques to manage constipation. Fast your betta to check whether it passes naturally as your first step. Try giving them a pea and a daphnia, both of which are high in fiber, if that doesn’t work. You may also attempt using Epsom salt if the condition is more severe.

Fish Fungus

This is a fungal condition that develops from earlier infections. The infected betta typically exhibits white lumps and bumps on the skin, white fuzz films, cotton-like growths, or slime (a mucus-like secretion).

Avoiding primary infections and injuries, keeping the aquarium clean, which entails routine water filtration and conditioning, can help prevent it.

Fish fungus may be treated with antibiotics like Methylene Blue and Fungus Clear. The Bettafix Remedy that is described below may also be used to effectively cure it.

If the illness is not treated in a timely manner, it might turn deadly.

Gill Flukes

Just as dreadful as they sound are gill flukes. The sole distinction between them and skin flukes is the location of their attachment.

Why Do Gill Flukes Occur?
Gill flukes are parasites that live and thrive inside the gills of your betta fish. Although they are most frequently found inside gills, they can also attach to your betta’s skin. Additionally, skin flukes may attach to the gills of your betta.

Last but not least, gill flukes only develop to a size of 0.3mm, so you won’t be able to notice them.

What Gill Flukes Symptoms Are There?
How do you tell if your betta has gill flukes if you can’t see them? Gill flukes are known to cause a variety of symptoms.


One or both of a betta fish’s eyes may swell outward due to this condition. Although it may be shocking to notice these signs, they are curable. Exposure to bad water over an extended period of time is the most frequent cause of popeye.

You shouldn’t ever encounter it if you keep an eye on the water quality in your betta’s tank and avoid giving him or her live food. Popeye can be treated without causing long-term harm or vision loss, but it can also be an indication of TB. A more dangerous and invariably deadly illness is tuberculosis.

Cloudy Eye

There are other illnesses than Popeye that might harm your betta’s eyes. Another disease that might harm your betta is cloudy eyes!

Describe cloudy eyes. As you might have guessed, the disease cloudy eye causes the eyes of your betta to become clouded. The eyes may even get opaque in more severe cases. Before treating a foggy eye, you must identify its particular cause because there are many possible potential reasons.

How Can Cloudy Eye In Bettas Be Treated?
Make sure you quarantine your betta from their main tank before treating clouded eyes. Then, to assist your betta feel less stressed, strengthen their immune system, and combat the virus, apply API Stress Coat and aquarium salt.

Betta Tumors

Betta tumors are often little bumps or cysts under the fish’s skin that are cancerous. They are brought on by genetic abnormalities and viral infections, and they mostly affect the reproductive organs, gills, tail, and abdomen.

By giving the fish nutritious food, keeping the tank clean, addressing other illnesses, and avoiding carcinogenic chemicals, the tumors can be managed.

Malignant tumors can be difficult to treat, but some straightforward surgical procedures might be helpful. Depending on the underlying cause of the bulge or bump, benign tumors and cysts can be treated in a variety of ways.

Septicemia (Red Streaks)

Betta fish that are under stress (such as from frequent, abrupt temperature fluctuations) or who have been injured are more susceptible to this uncommon illness. A bacterial illness called septicemia can be brought on by either providing contaminated food or introducing new community fish without first quarantining them.

It is not communicable, and noticeable red streaks or bloody markings on the body can be used to diagnose it. Red stripes can also result from nitrite poisoning, which is caused by high nitrite levels. By testing the water, you can rule this out first.

Along with popeye, septicemia could also appear. This illness may cause organ failure and dropsy if neglected. Also take notice that red-colored betta fish are almost impossible to diagnose with septicemia.


Tuberculosis is another sickness that might harm your betta, albeit it is uncommon. What you should know about betta TB is provided here.

Tuberculosis: What Is It?

Fish TB is not the same as human tuberculosis. In fact, you won’t need to worry about getting the disease if your betta has it. Mycobacterium marinum is a kind of bacteria that causes fish tuberculosis. The majority of aquariums contain it, however it typically only affects betta fish with compromised immune systems.

What Are Tuberculosis Symptoms?

One of the main issues with fish TB is that it typically has no symptoms until it is too late. The most typical signs and symptoms of TB are listed here. They could at the very least be able to assist you in ruling out other conditions or diseases.