Feeding Your Leopard Gecko: Can They Eat Black Soldier Fly Larvae?


Leopard geckos are fascinating reptiles that make great pets. As a responsible pet owner, it is essential to ensure that your leopard gecko’s diet is well-balanced and nutritious. While there are many commercial reptile food options available, it’s also essential to include live insects in their diet. One popular and highly nutritious option is the black soldier fly larvae.

Black Soldier Fly Larvae as Food

Black soldier fly larvae, also known as phoenix worms, calci-worms, or soldier grubs, are the larvae stage of black soldier flies (Hermetia illucens). Although they might not look appealing to humans, they are highly nutritious and an excellent source of protein for leopard geckos.

Unlike some other insects, black soldier fly larvae have a balanced calcium to phosphorus ratio, making them a suitable choice for your gecko’s diet. This is important as leopard geckos require calcium for proper bone growth and health. Due to their high calcium content, black soldier fly larvae are also an excellent choice for growing juvenile leopard geckos.

Benefits of Feeding Black Soldier Fly Larvae

There are several benefits to including black soldier fly larvae in your leopard gecko’s diet:

1. Nutritional Value:

Black soldier fly larvae contain approximately 20-40% protein, making them a fantastic source of high-quality protein for your leopard gecko. They also have a good amount of fat, vitamins, and minerals necessary for a balanced diet.

2. Gut-Loading Potential:

Gut-loading refers to feeding the insects nutritious foods before offering them to your leopard gecko. Black soldier fly larvae are easily gut-loaded as they consume a variety of fruits and vegetables. This means that when you feed them to your gecko, they will pass along those nutrients too, further enhancing their diet.

3. Easy Digestibility:

The soft exoskeleton of black soldier fly larvae makes them easy to digest for leopard geckos, reducing the risk of digestive issues. This makes them an ideal choice for leopard geckos of all ages, including juveniles and adults.

Feeding Tips and Precautions

When feeding your leopard gecko black soldier fly larvae, there are a few things to keep in mind:

1. Variety is Key:

While black soldier fly larvae offer numerous nutritional benefits, it is crucial to provide your leopard gecko with a varied diet. Include other insects like crickets, mealworms, and dubia roaches to ensure a well-rounded nutritional intake.

2. Size Matters:

Choose larvae that are an appropriate size for your leopard gecko. For juveniles, opt for smaller-sized larvae, while adult geckos can handle slightly larger ones. Avoid offering larvae that are too big, as they may cause choking or digestive issues.

3. Feeding Frequency:

It is generally recommended to feed leopard geckos every other day. However, the frequency may vary depending on the age, health, and individual needs of your gecko. Consult with a reptile veterinarian to determine the most suitable feeding schedule for your leopard gecko.


Black soldier fly larvae are a highly nutritious and beneficial addition to your leopard gecko’s diet. They are rich in protein, have a balanced calcium to phosphorus ratio, and are easily digestible. Remember to provide a varied diet and consult with a reptile veterinarian for personalized feeding recommendations. By offering a well-balanced and nutritious diet, your leopard gecko will thrive and live a healthy life.

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