Fruit Fly Food

Are you looking for an inexpensive way to feed your fruit flies? Are you overwhelmed with all the options for fruit fly food?

If so, this complete fruit fly food guide is for you!

In this guide, you will learn what fruit flies eat and how to make your own fruit fly food.

It’s also helpful to know when to feed them, and how to avoid the common mistakes made when feeding fruit flies.

With the help of this article, you will have a better understanding of the dietary needs of your fruit flies and be able to make your own nutritious fruit fly food.

What Do Fruit Flies Eat?

In the wild, fruit flies feed on a variety of items, including decaying fruits and vegetables, nectar, honeydew, and other sugary liquids.

They are attracted to the natural sugars found in these items and use their proboscis to suck up the liquid.

They also feed on pollen, fungi, and other decaying organic matter.

They have been known to feed on the juices of overripe fruits and vegetables, as well as on the sugary residue left by aphids.

In addition, fruit flies will feed on decaying meat, unsanitary surfaces, and even rotting carcasses.

Consuming these items, help to break down the organic matter and restore the balance of the ecosystem.

Buy Fruit Fly Food

If you don’t have the time or resources to make your own fruit fly food, there are commercial options available.

These are usually a mix of dry ingredients such as yeast, vitaminized brewer’s yeast, agar, and/or B vitamins.

These mixtures provide the necessary nutrients for fruit flies and are often more affordable than making your own food.

Additionally, there are many types of ready-made fruit fly food available, such as gels, liquids, and freeze-dried foods.

I’ve found that caterpillar food works best as a commercial food source for these types of flies.

When To Feed Fruit Flies

When it comes to feeding your fruit flies, the most integral thing to remember is to feed them regularly.

Depending on the size of your colony, fruit flies should be fed every 2-3 days.

Since fruit flies are omnivores, they need a balanced diet that includes both proteins and carbohydrates.

You can also add other fruits like apples or berries to the mix.

If you have a large colony, you can also feed them small amounts of boiled egg yolk or cooked grains. 

It is also important to remember to remove any uneaten food from the container within 24 hours.

This will help prevent any mold from forming and will keep the food fresh for your fruit flies.

Finally, it is essential to take into account the temperature of the environment when feeding your fruit flies.

Keeping the environment too warm can cause the food to spoil more quickly, so make sure to monitor the temperature and adjust the feeding schedule accordingly.

Common Mistakes 

One of the most common mistakes made when feeding fruit flies is not providing them with enough food.

Fruit flies need to feed regularly, so it is vital to check their food supply often and make sure it is replenished when necessary.

Additionally, it is important to provide a variety of food to your fruit flies.

Different types of fruit fly food provide different nutrients, so having a variety of options will ensure that your fruit flies are getting the nutrition they need. 

Another common mistake is not providing the right type of food.

Fruit flies need food that is high in protein and carbohydrates.

This can be achieved by providing them with a variety of fruits, vegetables, and other high-protein foods.

Additionally, it is recommended to avoid processed food as it can contain preservatives or other chemicals that can be harmful to your fruit flies. 

Finally, you will want to avoid overfeeding your fruit flies.

Too much food can lead to an unhealthy build-up of bacteria and can cause health problems for fruit flies.

Additionally, it can attract pests such as ants and mites, which can be detrimental to your fruit flies. 


Creating your own fruit fly food is an inexpensive and convenient way to ensure that your fruit flies are getting the nutrients they need.

With the help of this guide, you have a better understanding of what fruit flies eat, how to make your own nutritious fruit fly food, when to feed them, and how to avoid common mistakes.

Now that you have the knowledge to create your own fruit fly food, you can feel confident that your fruit flies are getting the nutrition they need.

Frequently Asked Questions

A typical fruit fly food recipe consists of cornmeal, molasses, and agar mixed with water and then boiled.

Once cooled, the mixture is poured into vials and allowed to solidify.


Fruit fly cultures are typically fed a mixture of yeast, sugar, and cornmeal, which provides the necessary nutrients for their growth and reproduction.

Fruit flies are attracted to sweet and fermenting foods such as overripe fruits, vegetables, and alcohol, as well as vinegar and other acidic substances.


One easy way to feed fruit flies is by providing them with a small piece of fruit, such as a slice of banana, placed in their culture vial or dish.

Alternatively, a drop of sugar water or yeast mixture can be added to a cotton ball or small piece of sponge and placed in the culture.


Fruit flies should be fed every 2-3 days, or as needed depending on the amount of food remaining in their culture.

Overfeeding can lead to mold growth and other problems, while underfeeding can result in decreased reproduction and survival rates.


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