15 Common Betta Fish Diseases Prevention and Treatment Betta fish diseases made suffers from a number of health conditions, but the good news to the keepers of this type of fish is that these health problems can be prevented and also treated. If the infections occur in the aquarium, they can be easily identified and treated effectively. 1. Fin and Tail Rot As the name suggests, this disease affects the fins and tail of betta. It can be caused by bacteria or fungi. The fins and tail appear to melt away as a result of rotting. It can be prevented by keeping the aquarium or living conditions of the fish clean. Fin and Tail Rot can be treated by medications containing antibiotics, such as trimethoprim, erythromycin and sulfadimidine. If it is effectively treated, the fatality is medium. If you have had Fin and Tail Rot affecting your fish, you may have tried medications such as Tetracycline, Jungle Fungus Eliminator (JFE), Maracyn or Melafix. But the truth of the matter is that these medications are not quite effective in treating this infection, and some even kill your fish. I have had little success with JFE and the other medications showed no success – they even worsened the condition. According to my own experience, the most effective medication for Fin and Tail Rot is Waterlife-Myxazin manufactured by a reputable company. The medication is itself a 5-day treatment, and it comes with clear instructions on how to use it. The most amazing thing about this treatment is that it starts to give positive results from day one! According to the manufacturer, it can also deal with pop eye, body rot, raised veins, ulcers, ‘redness’, cloudy eyes and other health conditions. If you have the Fin and Tail Rot disease or the related infections in your aquarium, I would encourage you to go for this medication. I have been using it since I discovered it in 2010 and I have had no disappointments with it. Fin rot betta symptoms : Depending on the severity of the infection, the signs may vary: Mild fin rot: slightly ragged fins, brownish fin edges Moderate fin rot: large fin disintegration, receding fin tips, black or red tattered edges, fuzzy growth on the fins Severe fin rot: Massive loss/chunks of fins missing, bloody fin bases, increased inflammation and redness, open sores on fins, body rot. Fin rot betta causes : It’s usually caused by poor water quality. Common stressors such as overcrowding, higher bio load, and overfeeding/underfeeding can also weaken the fish’s immune system, thus making them susceptible to the disease. Fin rot can also develop as a symptom of a fungal infection or other illnesses. Fin rot betta treatment : Maintaining clean water and ideal parameters can treat mild and moderate fin rot. Daily water changes are effective. For optimum results, add aquarium salt. In severe cases, medicate your betta using Fritz’s Maracyn 2 or Seachem’s KanaPlex. 2. Columnaris This is a bacterial disease that causes the fins to rag and fray. It also causes skin ulcers or lesions, white spots on the mouth, cottony growth on the mouth, scales and fins, and gills discoloration. The fish can have breathing difficulties as a result of the gill infection. The sickness can be prevented by treating open wounds and fungal infections. It can also be prevented by avoiding factors, such as limited oxygen, water hardness and overcrowding in the aquarium. Columnaris can be treated by Oxytetracycline and antibiotics containing Sulfa 4 TMP, TMP Sulfa and triple sulfa. If the infected fish is not treated, it can die in less than 72 hours. 3. Hemorrhagic betta fish Commonly known as Redmouth, Hemorrhagic causes serious bleeding inside the mouth and eyes of the fish. The disease can be prevented by disinfecting the aquarium to kill Yersinia Ruckeri, which is the bacteria causing the illness. The treatment of Hemorrhagic is possible with antibiotics such as ampicillin. The infection is treatable, which means that the fatality is low. Hemorrhagic betta symptoms : Septicemia can be hard to diagnose on red-colored betta fish. Dark red outlined blood vessels along the fin tips and under the scales Red marks may also be noticed around the mouth Lethargic behavior Refusal of food Unstable swimming pattern Hemorrhagic betta causes : Internal bacterial infection in the bloodstream Adding new tankmates without quarantining can spread the disease Poor water conditions Feeding infected food, mainly live food Chronic stress Hemorrhagic betta treatment : Higher nitrite concentration can also cause redness or streaks under the scales. To rule out this possibility, perform a water test. Keep your water pristine quality. Unless the underlying issue is known, it’s difficult to suggest medication. However, you can go for Minocycline (Maracyn II). It’s used for treating a broad spectrum of bacteria and has some decent success rates for curing Septicemia. Kanaplex is another highly recommended medication. This is a deadly ailment that affects the kidneys. The infected fish can have swollen abdomen as a result of accumulation of internal fluid. Some more symptoms include; outward-sticking scales and sunken eyes. The bacterial infection can be prevented by keeping the aquarium clean. It can also be prevented by feeding fish with vitamins-rich foods. There is no known cure for Dropsy but medications, such as Betta Revive, can help with the condition. Most fish that suffer from Dropsy do not survive. Dropsy Symptoms : Extreme swelling in the abdominal area Betta scales sticking out like a pinecone Loss of appetite and hindered ability to swim Fish stay closer to the surface for oxygen Dropsy betta causes : Kidney failure in bettas (that lead to dropsy or excess water retention) can be caused by a virus, bacteria, or parasitic infection. Poor nutrition, environmental or genetic factors can also be responsible for the condition. Dropsy betta treatment : While dropsy is not always treatable, antibiotics or Epsom salt in a hospital tank are known to produce positive results. Recommended antibiotics for dropsy include SeaChem’s KanaPlex (or any other kanamycin-based medication) or Mardel Maracyn II. More info : How to treat Dropsy in Betta fish and Protect your betta fish from Dropsy 5. Pop Eye betta fish This disorder causes swelling on one or both eyes. The swelling can be a tumor or viral infection. Pop Eye is usually a symptom of a disease and can be avoided by preventing infections in the aquarium. Antibiotics such as Tetracycline can cure the ailment. Most fish that suffer from Pop Eye survives at the end. Popeye betta Symptoms : Bulging eye. Protrusion of one or both eyeballs. Cloudiness of the eyeball. Expansion of the eye sockets Eye rupture Popeye betta cause : Prolonged exposure to poor water quality. A result of injury or bacterial infections. Sometimes, Popeye can be a sign of Tuberculosis, a fatal fish disease. Popeye betta treatment : First of all, test your water parameters. Ammonia and nitrite should be at 0 ppm, nitrate below 20 ppm, and pH at 7.0 If the test reading measures elevated toxins, carry out water changes. Give your betta a salt bath treatment. If Popeye results from an injury, your betta will heal on its own as long as the condition doesn’t lead to secondary infection. Lastly, when nothing seems to work, take the help of antibiotics – Maracyn II or Kanaplex. 6. Eye cloud betta fish Commonly known as Cloudy cornea, this disease causes white films on the eyes. It can be prevented by improving the quality of water. A water conditioner is needed to make the water safer for the aquatic animal. Eyecloud can be treated by antibiotics such as Metafix and Fungus Clear. The bacterial sickness is not fatal but can impair vision. Eye clound betta causes : Cloudy betta eyes can be caused by chemical imbalances, bacterial infection, internal parasites, nutritional deficiencies, or a physical eye injury. Eye clound betta treat ment : Treating cloudiness involves addressing the underlying cause and taking preventive measures accordingly. However, if you feel clueless, do this: Conduct a water test to ensure toxins aren’t running high Perform daily water changes Get rid of stressors (if any) Give your betta an Epsom salt bath If the problem persists or worsens, consult a veterinarian for an accurate diagnosis and tailored treatment plan. 7. Mouth Fungus This is actually a bacterial disease, and it causes white lines and clumps around the lips and mouth of the fish. It can be avoided by keeping the water clean. Amoxicillin as an antibiotic can cure Mouth Fungus. The infected fish cannot survive if the illness is not treated early enough. Mouth fungus symptoms : Gross signs of Columnaris disease include frayed fins, depigmented lesions on the skin, and necrotic gill lesions. Secondary fungi infections appear as cottony growth or grayish-white patches around the head or mouth. Another distinctive symptom of Columnaris is the development of a raised lesion on the back, like a saddle on the fish’s body. Mouth fungus causes : Stress conditions and poor water quality (high nitrite levels and organic load) Mouth fungus treatment : Columnaris can be cured using antibiotic bath treatment. Use Kanamycin and Nitrofurazone together. Kanamycin is found in Seachem Kanaplex, and Nitrofurazone is found in either Jungle Fungus Clear Fizz tabs or Furan-2. You need at least 2 rounds of treatments. It’s best to have the antibiotics in the tank for 7-10 days to mitigate the infection from your betta’s system. Salt bath treatments can be used for disinfecting water contaminated by F. columnare. For severe infections, you may require systemic antibiotic therapy. Let’s Learning Your Medications for Bettas 8. Furunculosis The symptoms of Furunculosis include skin ulcers and open red sores. Improving water quality can effectively prevent the disease. Fungus Clear as an antibiotic can treat this bacterial ailment. Furunculosis can kill fish that doesn’t receive treatment in time. Furunculosis symptoms : Betta fish Furunculosis can be caused by various factors, including infections, Bacterial, or poor water quality. Furunculosis causes : Betta fish will have a swollen belly. and have inflammation which will be seen as red on the abdomen Furuculosis treatment : Keep the water clean Add seasalt in to the jar 1 teaspoon for 2 litter water. Stop to feeding until he back to normal and can start to feed. 9. Fungus betta fish This is a fungal disease that originates from previous infections. The affected betta usually has cotton-like growths or slime (mucus) on the skin. It can be prevented by avoiding primary infections and injuries and keeping the aquarium clean. Antibiotics such as Methylene Blue and Fungus Clear can cure Fish Fungus. It can also be treated effectively by the Bettafix Remedy mentioned below. The sickness can become fatal if it is not treated early enough. Fungus symptoms : Gross signs of Columnaris disease include frayed fins, depigmented lesions on the skin, and necrotic gill lesions. Secondary fungi infections appear as cottony growth or grayish-white patches around the head or mouth. Another distinctive symptom of Columnaris is the development of a raised lesion on the back, like a saddle on the fish’s body. Fungus causes : Stress conditions and poor water quality (high nitrite levels and organic load) Fungus treatment : While dropsy is not always treatable, antibiotics or Epsom salt in a hospital tank are known to produce positive results. Recommended antibiotics for dropsy include SeaChem’s KanaPlex (or any other kanamycin-based medication) or Mardel Maracyn II. 10. Velvet Siamese fighting fish infected with Velvet appears to have a rusty skin. The parasitic disease can be prevented by improving the quality of water and ensuring the living conditions are stress-free. Water conditioners are some of the best substances to improve the living conditions. It is highly contagious but it can be treated fully by Bettafix Remedy. Manufactured by Aquarium Pharmaceuticals, this medication consists of curing components such as sodium chloride, copper sulfate, acriflavin, formalin, sulfa 4 TMP, methylene blue and malachite green. With all these healing components, this remedy can also be used to treat all the other diseases, illnesses, sickness and disorders listed on this article. I have been keeping bettas for almost 15 years, and I have seen this medication heal my aquatic pets. I recommend that you use it to prevent, control and treat many ill-health conditions. If Velvet is not treated early enough, the infected fish dies in a matter of days. Velvet Symptoms : Velvet-infected betta fish appears brownish-gold with a rust-like dusting on the body, fins, and/or gills. It causes the betta to lose its slime coat. You may also find your betta rubbing against objects to itch their bodies to get parasites off. Other signs include lethargy, clamped fins, and respiratory distress. Velvet causes : Velvet disease in bettas is caused by ongoing stressors, such as poor water quality and prolonged exposure to colder water temperatures. Velvet treatment : Medicate your fish using Mardel’s CopperSafe. Copper-based anti-parasite medicines are usually effective against gold dust disease. A week-long blackout (complete darkness) is particularly helpful in eradicating the parasite as it partly depends on photosynthesis. Raise the temperature to 80 degrees Fahrenheit Discontinue carbon filtration during treatment. 11. Ich Also known as White Spot, Ich or Ick is a parasitic disease that causes white dots or spots on the skin of betta fish. It can be prevented by changing the water regularly. The sickness can be treated by Fish-zole, Malachite Green or salt baths. It is very easy to deal with the illness if treatment starts early. Ich signs and symptoms : The most noticeable sign of Ich infection is tiny crystals on the body and fins, like someone has sprinkled salt on the betta. Other symptoms may include loss of appetite, rapid breathing, fish rubbing their bodies on decor items or gravel, lethargy, and hiding behavior. Ich causes and contributing factors : Stress Contagious companions Poor water quality Ich treatment : Quarantine your betta fish. Gradually increase the tank’s temperature up to 81-86 degrees Fahrenheit. Warm water holds less dissolved oxygen, so consider adding an airstone. Add aquarium salt to the aquarium or use strong medications such as Rid Ich Plus, Ich-X, or Mardel Copper Safe. Perform daily water changes. NOTE: Do not stop the treatment early, even if the Ich seems to be gone.
15-common-betta-fish-diseases-prevention-and-treatment-betta-fish-diseases-made-suffers-from-a-number-of-health-conditions-but-the-good-news-to-the-keepers-of-this-type-of-fish-is-that-these-health-p

15 Common Betta Fish Diseases Prevention and Treatment
Betta fish diseases made suffers from a number of health conditions, but the good news to the keepers of this type of fish is that these health problems can be prevented and also treated. If the infections occur in the aquarium, they can be easily identified and treated effectively.

1. Fin and Tail Rot
As the name suggests, this disease affects the fins and tail of betta. It can be caused by bacteria or fungi. The fins and tail appear to melt away as a result of rotting.

It can be prevented by keeping the aquarium or living conditions of the fish clean.

Fin and Tail Rot can be treated by medications containing antibiotics, such as trimethoprim, erythromycin and sulfadimidine.

If it is effectively treated, the fatality is medium.

If you have had Fin and Tail Rot affecting your fish, you may have tried medications such as Tetracycline, Jungle Fungus Eliminator (JFE), Maracyn or Melafix. But the truth of the matter is that these medications are not quite effective in treating this infection, and some even kill your fish.

I have had little success with JFE and the other medications showed no success – they even worsened the condition. According to my own experience, the most effective medication for Fin and Tail Rot is Waterlife-Myxazin manufactured by a reputable company.

The medication is itself a 5-day treatment, and it comes with clear instructions on how to use it. The most amazing thing about this treatment is that it starts to give positive results from day one! According to the manufacturer, it can also deal with pop eye, body rot, raised veins, ulcers, ‘redness’, cloudy eyes and other health conditions.

If you have the Fin and Tail Rot disease or the related infections in your aquarium, I would encourage you to go for this medication. I have been using it since I discovered it in 2010 and I have had no disappointments with it.

Fin rot betta symptoms :
Depending on the severity of the infection, the signs may vary:

Mild fin rot: slightly ragged fins, brownish fin edges
Moderate fin rot: large fin disintegration, receding fin tips, black or red tattered edges, fuzzy growth on the fins
Severe fin rot: Massive loss/chunks of fins missing, bloody fin bases, increased inflammation and redness, open sores on fins, body rot.
Fin rot betta causes :
It’s usually caused by poor water quality.
Common stressors such as overcrowding, higher bio load, and overfeeding/underfeeding can also weaken the fish’s immune system, thus making them susceptible to the disease.
Fin rot can also develop as a symptom of a fungal infection or other illnesses.
Fin rot betta treatment :
Maintaining clean water and ideal parameters can treat mild and moderate fin rot. Daily water changes are effective.
For optimum results, add aquarium salt.
In severe cases, medicate your betta using Fritz’s Maracyn 2 or Seachem’s KanaPlex.

2. Columnaris
This is a bacterial disease that causes the fins to rag and fray. It also causes skin ulcers or lesions, white spots on the mouth, cottony growth on the mouth, scales and fins, and gills discoloration. The fish can have breathing difficulties as a result of the gill infection.

The sickness can be prevented by treating open wounds and fungal infections. It can also be prevented by avoiding factors, such as limited oxygen, water hardness and overcrowding in the aquarium.

Columnaris can be treated by Oxytetracycline and antibiotics containing Sulfa 4 TMP, TMP Sulfa and triple sulfa.
If the infected fish is not treated, it can die in less than 72 hours.

3. Hemorrhagic betta fish
Commonly known as Redmouth, Hemorrhagic causes serious bleeding inside the mouth and eyes of the fish.

The disease can be prevented by disinfecting the aquarium to kill Yersinia Ruckeri, which is the bacteria causing the illness.

The treatment of Hemorrhagic is possible with antibiotics such as ampicillin.

The infection is treatable, which means that the fatality is low.

Hemorrhagic betta symptoms :
Septicemia can be hard to diagnose on red-colored betta fish.

Dark red outlined blood vessels along the fin tips and under the scales
Red marks may also be noticed around the mouth
Lethargic behavior
Refusal of food
Unstable swimming pattern
Hemorrhagic betta causes :
Internal bacterial infection in the bloodstream
Adding new tankmates without quarantining can spread the disease
Poor water conditions
Feeding infected food, mainly live food
Chronic stress
Hemorrhagic betta treatment :
Higher nitrite concentration can also cause redness or streaks under the scales. To rule out this possibility, perform a water test.
Keep your water pristine quality.
Unless the underlying issue is known, it’s difficult to suggest medication. However, you can go for Minocycline (Maracyn II). It’s used for treating a broad spectrum of bacteria and has some decent success rates for curing Septicemia.
Kanaplex is another highly recommended medication.

This is a deadly ailment that affects the kidneys. The infected fish can have swollen abdomen as a result of accumulation of internal fluid.

Some more symptoms include; outward-sticking scales and sunken eyes.

The bacterial infection can be prevented by keeping the aquarium clean. It can also be prevented by feeding fish with vitamins-rich foods.

There is no known cure for Dropsy but medications, such as Betta Revive, can help with the condition.

Most fish that suffer from Dropsy do not survive.

Dropsy Symptoms :
Extreme swelling in the abdominal area
Betta scales sticking out like a pinecone
Loss of appetite and hindered ability to swim
Fish stay closer to the surface for oxygen
Dropsy betta causes :
Kidney failure in bettas (that lead to dropsy or excess water retention) can be caused by a virus, bacteria, or parasitic infection.
Poor nutrition, environmental or genetic factors can also be responsible for the condition.
Dropsy betta treatment :
While dropsy is not always treatable, antibiotics or Epsom salt in a hospital tank are known to produce positive results.
Recommended antibiotics for dropsy include SeaChem’s KanaPlex (or any other kanamycin-based medication) or Mardel Maracyn II.
More info : How to treat Dropsy in Betta fish and Protect your betta fish from Dropsy

5. Pop Eye betta fish
This disorder causes swelling on one or both eyes. The swelling can be a tumor or viral infection.

Pop Eye is usually a symptom of a disease and can be avoided by preventing infections in the aquarium.

Antibiotics such as Tetracycline can cure the ailment.

Most fish that suffer from Pop Eye survives at the end.

Popeye betta Symptoms :
Bulging eye.
Protrusion of one or both eyeballs.
Cloudiness of the eyeball.
Expansion of the eye sockets
Eye rupture
Popeye betta cause :
Prolonged exposure to poor water quality.
A result of injury or bacterial infections.
Sometimes, Popeye can be a sign of Tuberculosis, a fatal fish disease.
Popeye betta treatment :
First of all, test your water parameters. Ammonia and nitrite should be at 0 ppm, nitrate below 20 ppm, and pH at 7.0
If the test reading measures elevated toxins, carry out water changes.
Give your betta a salt bath treatment.
If Popeye results from an injury, your betta will heal on its own as long as the condition doesn’t lead to secondary infection.
Lastly, when nothing seems to work, take the help of antibiotics – Maracyn II or Kanaplex.

6. Eye cloud betta fish
Commonly known as Cloudy cornea, this disease causes white films on the eyes.

It can be prevented by improving the quality of water. A water conditioner is needed to make the water safer for the aquatic animal.

Eyecloud can be treated by antibiotics such as Metafix and Fungus Clear.

The bacterial sickness is not fatal but can impair vision.

Eye clound betta causes :
Cloudy betta eyes can be caused by chemical imbalances, bacterial infection, internal parasites, nutritional deficiencies, or a physical eye injury.
Eye clound betta treat ment :
Treating cloudiness involves addressing the underlying cause and taking preventive measures accordingly. However, if you feel clueless, do this:

Conduct a water test to ensure toxins aren’t running high
Perform daily water changes
Get rid of stressors (if any)
Give your betta an Epsom salt bath
If the problem persists or worsens, consult a veterinarian for an accurate diagnosis and tailored treatment plan.

7. Mouth Fungus
This is actually a bacterial disease, and it causes white lines and clumps around the lips and mouth of the fish.

It can be avoided by keeping the water clean.

Amoxicillin as an antibiotic can cure Mouth Fungus.

The infected fish cannot survive if the illness is not treated early enough.

Mouth fungus symptoms :
Gross signs of Columnaris disease include frayed fins, depigmented lesions on the skin, and necrotic gill lesions.
Secondary fungi infections appear as cottony growth or grayish-white patches around the head or mouth.
Another distinctive symptom of Columnaris is the development of a raised lesion on the back, like a saddle on the fish’s body.
Mouth fungus causes :
Stress conditions and poor water quality (high nitrite levels and organic load)
Mouth fungus treatment :
Columnaris can be cured using antibiotic bath treatment. Use Kanamycin and Nitrofurazone together. Kanamycin is found in Seachem Kanaplex, and Nitrofurazone is found in either Jungle Fungus Clear Fizz tabs or Furan-2.
You need at least 2 rounds of treatments.
It’s best to have the antibiotics in the tank for 7-10 days to mitigate the infection from your betta’s system.
Salt bath treatments can be used for disinfecting water contaminated by F. columnare.
For severe infections, you may require systemic antibiotic therapy.
Let’s Learning Your Medications for Bettas

8. Furunculosis
The symptoms of Furunculosis include skin ulcers and open red sores.

Improving water quality can effectively prevent the disease.

Fungus Clear as an antibiotic can treat this bacterial ailment.

Furunculosis can kill fish that doesn’t receive treatment in time.

Furunculosis symptoms :
Betta fish Furunculosis can be caused by various factors, including infections, Bacterial, or poor water quality.
Furunculosis causes :
Betta fish will have a swollen belly. and have inflammation which will be seen as red on the abdomen
Furuculosis treatment :
Keep the water clean
Add seasalt in to the jar 1 teaspoon for 2 litter water.
Stop to feeding until he back to normal and can start to feed.

9. Fungus betta fish
This is a fungal disease that originates from previous infections. The affected betta usually has cotton-like growths or slime (mucus) on the skin.

It can be prevented by avoiding primary infections and injuries and keeping the aquarium clean.

Antibiotics such as Methylene Blue and Fungus Clear can cure Fish Fungus. It can also be treated effectively by the Bettafix Remedy mentioned below.

The sickness can become fatal if it is not treated early enough.

Fungus symptoms :
Gross signs of Columnaris disease include frayed fins, depigmented lesions on the skin, and necrotic gill lesions.
Secondary fungi infections appear as cottony growth or grayish-white patches around the head or mouth.
Another distinctive symptom of Columnaris is the development of a raised lesion on the back, like a saddle on the fish’s body.
Fungus causes :
Stress conditions and poor water quality (high nitrite levels and organic load)
Fungus treatment :
While dropsy is not always treatable, antibiotics or Epsom salt in a hospital tank are known to produce positive results.
Recommended antibiotics for dropsy include SeaChem’s KanaPlex (or any other kanamycin-based medication) or Mardel Maracyn II.

10. Velvet
Siamese fighting fish infected with Velvet appears to have a rusty skin.

The parasitic disease can be prevented by improving the quality of water and ensuring the living conditions are stress-free. Water conditioners are some of the best substances to improve the living conditions.

It is highly contagious but it can be treated fully by Bettafix Remedy. Manufactured by Aquarium Pharmaceuticals, this medication consists of curing components such as sodium chloride, copper sulfate, acriflavin, formalin, sulfa 4 TMP, methylene blue and malachite green.

With all these healing components, this remedy can also be used to treat all the other diseases, illnesses, sickness and disorders listed on this article. I have been keeping bettas for almost 15 years, and I have seen this medication heal my aquatic pets. I recommend that you use it to prevent, control and treat many ill-health conditions.

If Velvet is not treated early enough, the infected fish dies in a matter of days.

Velvet Symptoms :
Velvet-infected betta fish appears brownish-gold with a rust-like dusting on the body, fins, and/or gills. It causes the betta to lose its slime coat.
You may also find your betta rubbing against objects to itch their bodies to get parasites off.
Other signs include lethargy, clamped fins, and respiratory distress.
Velvet causes :
Velvet disease in bettas is caused by ongoing stressors, such as poor water quality and prolonged exposure to colder water temperatures.
Velvet treatment :
Medicate your fish using Mardel’s CopperSafe. Copper-based anti-parasite medicines are usually effective against gold dust disease.
A week-long blackout (complete darkness) is particularly helpful in eradicating the parasite as it partly depends on photosynthesis.
Raise the temperature to 80 degrees Fahrenheit
Discontinue carbon filtration during treatment.

11. Ich
Also known as White Spot, Ich or Ick is a parasitic disease that causes white dots or spots on the skin of betta fish.

It can be prevented by changing the water regularly.

The sickness can be treated by Fish-zole, Malachite Green or salt baths.

It is very easy to deal with the illness if treatment starts early.

Ich signs and symptoms :
The most noticeable sign of Ich infection is tiny crystals on the body and fins, like someone has sprinkled salt on the betta.
Other symptoms may include loss of appetite, rapid breathing, fish rubbing their bodies on decor items or gravel, lethargy, and hiding behavior.
Ich causes and contributing factors :
Stress
Contagious companions
Poor water quality
Ich treatment :
Quarantine your betta fish.
Gradually increase the tank’s temperature up to 81-86 degrees Fahrenheit.
Warm water holds less dissolved oxygen, so consider adding an airstone.
Add aquarium salt to the aquarium or use strong medications such as Rid Ich Plus, Ich-X, or Mardel Copper Safe.
Perform daily water changes.
NOTE: Do not stop the treatment early, even if the Ich seems to be gone.