Crested Geckos, Diet and Food, Geckos

Can Crested Geckos Eat Guava or Not?

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by The Pet Engineers


A crested gecko’s main diet consists of insects, larvae, and fruits. However, that doesn’t mean crested geckos can eat all insects, larvae, and fruits.

Some insects are harmful when ingested by geckos and some fruits can cause death when eaten. Guava is a tropical fruit common in many tropical and subtropical regions.

Guavas are quite common in a crested gecko’s habitat. But, should you feed guava to your gecko? To be specific, can crested geckos eat guava in the first place?

Here’s everything you need to know about feeding guava to your crested gecko.

Can Crested Geckos Eat Guava?

Yes, crested geckos can eat guava.

It’s considered a safe fruit because it doesn’t have chemicals that could pose a problem when ingested by your pet.

Should You Feed Crested Geckos Guava?              

Yes, you should feed crested geckos guava.

It’s found in a crested gecko’s natural habitat and doesn’t contain toxins harmful to their health. We recommend overripe guavas to crested geckos.

crested geckos can eat guava
Crested geckos can eat guava

Can Baby and Juvenile Crested Geckos Eat Guava?

Yes, baby and juvenile crested geckos can eat guava.

The fruit doesn’t contain dangerous chemicals that can induce illness or cause death when eaten by crested geckos. It’s a safe fruit that can be fed to geckos.

How To Feed Your Crested Gecko Guava

There are two ways you can feed guava to your crested gecko. Slicing into small pieces and blending.

Slicing is the preferred method for juvenile and adult crested geckos whiles blending is best for baby crested geckos.

Slice into small pieces

  1. Cut the guava into several small pieces. Crested geckos can’t bite into the outer exterior of guava and require help from you to eat the fruit.
  2. After cutting into small pieces, guava can be served on the feeding dish to your gecko. We recommend mixing the small pieces with insects or other sliced fruits.

Blend to a paste or puree

  1. Cut and slice the guava.
  2. Put the guava into a blender. You can add insects or other fruits to the blender.
  3. Turn on the blender and blend to a paste or puree
  4. Serve paste/puree on your gecko’s feeding dish.

This feeding method is the best for baby and juvenile crested geckos. Moreover, you can blend insects or fruits along with the dragon fruit for a more balanced diet.

How Many Times Should Guava Be Fed To It?

Guava should be fed once or twice a week. We recommend serving guava with other foods and not alone.

How Many Guava Can You Feed It?

A single guava is too much for a crested gecko. A half or quarter of guava sliced into many pieces is enough.

How Calcium To Phosphorous Ratio Affects Your Crestie

Crested geckos should eat a diet that has a Ca:P ratio of 2:1, 1:1, or 1:0.5. The ratio you decide to feed your gecko can affect their growth, metabolism, and health.

If the gecko consumes calcium above what it needs, it is excreted in its urine.

If they consume too much phosphorus, they store it in their bones and teeth, which can lead to problems like kidney stones and metabolic bone disease.

What Is The Ratio Of Calcium To Phosphorus In Guava?

The ratio of calcium to phosphorus in guava is 1:23 which indicates that there is 23 times the amount of phosphorus as calcium in the guava.

Nutritional Value Of Guava

nutritional value of guava
Nutritional value of guava

How To Calculate Ca:P Ratio

You can figure this out by calculating the Ca:P ratio using the formula given below.

According to the nutritional content, the Ca:P ratio is 29.7mg:688mg. Dividing through by 29.7mg (calcium). The ratio becomes 1:23.

How Does Oxalic Acid Affect Your Pet?

Oxalic acid is not a nutrient or essential dietary component and it is not required for normal growth or health.

When oxalic acid is consumed, it binds to the calcium and magnesium in the body and prevents them from being absorbed.

This can lead to calcium deficiency which can be harmful to your pet. Crested geckos are strict insectivores and may not benefit from the oxalic acid in the food and may not be able to digest it.

Some people recommend soaking and rinsing the fruits to get rid of the oxalic acid. However, this is not proven to be effective.

sliced guava
Guava can be served sliced

What are the Oxalic Acid Levels In Guava`?

Guava has moderate to high amounts of oxalic acid depending on how ripe the fruit is.

Because of the oxalic acid level, guava can’t be fed too often and can prevent calcium from being absorbed in a gecko’s body. Hence the recommended amount of feeding guava is once or twice a week.


Guava is a tropical fruit packed with a lot of vitamins and minerals. Although crested geckos can eat guava.

The calcium to phosphorous ratio and moderate levels of oxalic acid means you can’t serve it often. One way around this is to serve guava with other fruits or insects and not alone.

This decreases the effect of oxalic acid and ratio while your gecko benefits from essential vitamins and minerals.

The Pet Engineers

A team of pet lovers. We have owned various pets over their years. From dogs to reptiles, etc. Our love of pets, strive to us to create up-to-date and accurate helpful guides on pets.

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