Why Is My Molly Fish Turning White?

Why Is My Molly Fish Turning White?

Molly fish are beautiful colorful species that are popular among fish keepers. However, it would very devastating to see your molly turning white. 

There are a few reasons that can cause your fish to lose its colors, inadequate water parameters such as water temperature, ammonia, and nitrites in your tank can play a big role.

Also, a deficiency in certain vitamins and minerals can make your mollies’ colors fade away.

In this article, we’ll discuss the possible reasons behind your molly turning white and what you can do to fix the problem and provide your fish with the care it deserves.

What Are the Reasons That Cause Molly Fish to Turn White & How to Prevent It?

1. Improper Water Parameters

Mollies are hardy fish that can adapt to a wide range of water conditions. 

However, they still require pristine water parameters to thrive and stay healthy.

Toxins like ammonia, nitrites, and nitrates can cause mollies to lose their colors as well. 

Also, any sudden changes or fluctuations in water parameters can cause stress to mollies, which in turn will lead them to turn white.

This is why it’s so important to slowly acclimate new fish whenever you’re making any changes to the tank.

It is also important to perform water changes in your fish tank on a regular basis to keep the quality high.

And to ensure the toxins levels are low in your tank, you should also invest in a high-quality aquarium water filter.

If you live in a chilly environment, you can utilize an aquarium heater to keep the water temperature within the correct range.

Also, you should use a pH test kit to avoid any drastic changes in the pH level of your tank water.

These are some of the ideal water parameters for keeping mollies:

2. Poor Diet

When your molly is not getting the proper diet, many nutrients will be missing from the body. 

Thus, it will not be able to maintain its coloration and will start to turn white.

To ensure you are feeding them the right way, you should feed them high-quality flake or pellet food as their primary food.

Also, you can feed your mollies with live, frozen, or freeze-dried foods like brine shrimp, bloodworms, daphnia, etc.

Furthermore, it’s critical to feed your mollies a beta carotene-rich fish food to give them the vitamins and minerals they need to maintain their vibrant coloration.

Besides, ensure that you’re feeding them small meals several times a day instead of one large meal.

This will help prevent any leftover food from rotting and polluting the water tank.

3. Improper Lighting

One of the common reasons that cause your molly to turn white is poor lighting. Mollies prefer moderate lighting and anything beyond that can cause them stress.

Too much light, on the other hand, will encourage the growth of algae in the tank which can further lead to water tank quality issues leading to your molly’s colors fading away.

Therefore, it’s best to use a moderate light bulb or natural sunlight that will provide the right amount of light without overdoing it.

You can also install an aquarium dimmer to control the light intensity as needed.

4. Lack of Hiding Places & Aquarium Plants

When there are not enough hiding places or aquarium plants in the fish tank, mollies don’t feel safe, and they will start to fade away.

Therefore, you can add plants and d├ęcor items like caves, rocks, or driftwood to provide them with some hiding spots.

Aquarium plants will also help absorb some of the toxins present in the water and will make it easier for your mollies to breathe.

Can Mollies Get Their Color Back After Losing It?

Mollies can get the color back if you could address and treat the underlying cause.

For example, if they turned white due to a proper diet deficiency, then providing them with the proper diet with all the necessary vitamins and minerals will help them regain their color.

Similarly, if the water quality is poor, correcting water quality and the water parameters, especially the water temperature, will help mollies get their colors back.

Also, if you find out that mollies are being harmed by poor lighting, you should act right away to give them the natural sunlight they need.

However, if the problem is not fixed in time, it can cause long-term damage to your mollies and may even lead to death.

So, it’s always best to take preventive measures to ensure that your mollies don’t lose their vibrant colors in the first place.

Is Led Light Affect Molly Fish Color?

The duration and intensity of led light exposure can have an impact on molly fish color.

For example, if the led light is too bright, it can stress your molly which can cause it to turn white.

To maintain their colors, mollies require 10-12 hours of natural light or moderate LED illumination.

If you choose LEDs as your mollies’ main lighting source, remember to set them to come on and off at appropriate intervals so your fish can get a regular day/night cycle.


How to Know If You Have a Sick Molly Fish?

A sick molly will have visible symptoms like lethargy, excess mucus, clamped fins, irregular swimming, etc.

If you notice any of these signs in your molly fish, it’s best to consult a vet as soon as possible.

How Often Should I Change Mollies Water?

You should perform a partial water change (20-25%) every week to maintain good water quality for your mollies.

How Do I Know If My Molly Is Pregnant?

Female mollies can get pregnant even if they are not kept with a male fish.

If you notice that your female molly is getting fatter and her belly is swelling up, it’s a sign that she might be pregnant.

What Are the Most Common Diseases That Affect Mollies?

The most common diseases that affect molly fish are ich (white spot disease), velvet disease, fin rot, and swim bladder disease.

How Do I Prevent My Mollies From Getting Sick?

The best way to prevent your mollies from getting sick is to maintain a good water tank regularly and provide them with a healthy diet.

You should also quarantine new fish before adding them to your tank to make sure they are not carrying any diseases.

In addition, you should provide them with a proper diet and supplement it with vitamins and minerals to keep their immune system strong.

Last but not least, don’t overfeed your mollies as it can lead to health problems like swimming bladder disease.

Last Words

Mollies are beautiful and popular aquarium fish. But sometimes they might turn white due to various reasons.

The most common causes of molly fish turning white are diet deficiency, poor water quality, and improper lighting.

If you take good care of your mollies and provide them with the right conditions, they will stay healthy and vibrant.

We hope this article was helpful. If you have any further questions, please don’t hesitate to ask us in the comments section below.

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