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Why Is My Blue And White Betta Fish Turning Blue?

The popularity of keeping betta fish is at an all-time high and we only expect the popularity of keeping betta fish to continue to grow at this exponential rate due to the prices of the rare betta fish colors and patterns that keep going viral on social media coming down in price.

Due to their prices coming down, people are often getting the two color bettas with a rare pattern with blue and white being particularly popular with some standard betta patterns also being blue and white.

Due to so many people having a blue and white betta fish as well as there being a number of potential issues that can tweak the color of your betta, it is easy to understand why so many people reach out each month to ask why their blue and white betta fish is turning blue.

In addition to this, we often see people asking why their white betta fish is turning blue too but it is more common for a betta fish that is white and blue to have this issue.

Although most people initially think that their betta fish is turning blue due to a parasitic, fungal or bacterial infection, this is rarely the case and more often than not, it is something much simpler and often very easy to fix.

We hope that the information in our article below will be able to help our readers better understand why their betta fish it turning blue as well as how they are able to stop the process.

Why Is My Blue And White Betta Fish Turning Blue?

The most common reason that a white betta fish will turn blue is due to it being stressed, angry or anxious with this often being enough to cause a betta fishs other color pigments to flare up.

The second most common reason that a betta fish will change color is due to a poor diet and low-quality food not providing the nutrition that the fish requires to maintain its colors.

There are a number of reasons that your betta fish can become stressed, angry, and anxious with the most common one by far being that the fish is kept in a tank that is just too small for it.

A betta fish really does need a cheap 5 gallon aquarium as a minimum with a cheap 10 gallon tank being highly recommended in most cases.

There are a huge number of fish food products on the market with some of them being excellent where as others are quiet poor but you have to keep in mind that the majority of these foods are designed as a generic food for all fish species.

The majority of people new to caring for betta fish are usually not aware of this but you should be trying to feed your pet betta fish a specialist betta food to help offer a nutritionally complete diet that can maintain their color.

How Can I Stop My Blue And White Betta Fish Turning Blue?

If your betta fish is changing color due to anger, stress or anxiety then identifying the cause of this and removing it from your betta’s tank will relax your betta fish and can help maintain its normal color pigment.

If your betta fish is having issues maintaining its color due to a low-quality diet then switching over to a better fish food product designed for betta fish will often being enough to offer a complete nutritional profile that your betta can maintain its color on.

Our article going over how to calm and angry betta fish goes into much more detail on helping a mad betta fish calm down.

The tips and tricks in that article can also help with stress and anxiety too that can also be a reason that betta fish can have problems maintaining their colors.

Just keep in mind that it can take a couple of weeks for the stress levels of your betta fish to normalise depending on its cause so it may take as long as a month before its color returns to normal.

The majority of our readers who have a blue and white or just white betta fish turning blue will probably be having the problem due to the diet of their betta fish though.

As we mentioned above, a specialist betta food can easily offer a nutritionally complete diet for your betta fish and prevent this.

As we covered in our betta fish care guide, adding some live bloodworms or live daphnia to the diet of your betta fish can help top up its vitamin and mineral profile while helping to keep its diet interesting and help the fish maintain its color.

Can I Get My Betta Fish To Go Back To Being Blue And White?

The majority of betta fish who do start to turn blue are simply reverting to their dominant pigment with the other color that is fading, often white being their non-dominant pigment even though the non-dominant pigment can actually cover more of the betta fish’ body.

Once you work out why your betta fish is turning blue and fix the problem, your betta fish should start to produce the non-dominant pigments again and return to its normal colors.

If your betta fish was turning blue due to problems in its diet, you should be able to see its normal colors returning quickly and if you do switch to a specialist betta food as the main food source for your betta fish, you could see these changes in as little as a week.

The majority of people will often need to wait longer if they are relying on boosting the diet of their betta fish by integrating live food but this can work well too, it just takes a longer time period.

Fixing problems with stress, anxiety, and anger in a betta fish can take much longer due to having to actually find the reason that your betta fish is upset.

Once you have worked out the cause and fixed it, your betta fish should start to calm down and return to its natural color again but this can often take a month or so before you will start to see much of an improvement.


That brings our article going over how to stop a blue and white betta fish turning blue to an end. The majority of people who do have problems with their betta fish turning blue will easily be able to fix the issue within a month or two, it just takes time to workout what is causing the problem. Thankfully, this is nothing to do with parasites, bacteria or fungus infecting your pet betta fish as most people think and it is usually due to poor diet or issues with anger, stress, and anxiety in your betta fish.