If you've just brought home a frog-eyed gecko (Teratoscincus scincus), that big-eyed, sandy-colored charmer, your first and most pressing question is probably about its dinner. You're not alone. I've kept these fascinating desert dwellers for over a decade, and figuring out their diet was my first real hurdle. It's not as simple as just dropping in a few crickets. Get it wrong, and you'll see health issues fast. Get it right, and you'll have a lively, curious pet that thrives for years. So, let's cut to the chase: frog-eyed geckos are strict insectivores. Their diet in captivity must be a varied rotation of appropriately-sized, gut-loaded, and supplemented live insects. No fruits, no veggies, no exceptions.
Your Quick Feeding Roadmap
What Their Wild Diet Teaches Us About Feeding
To understand what to feed them, you need to know where they come from. Frog-eyed geckos hail from arid and semi-arid regions of Central Asia—think Afghanistan, Iran, Pakistan, and parts of China. It's a harsh, sandy environment with sparse vegetation.
Their diet there isn't gourmet; it's opportunistic. They're nocturnal hunters, using those incredible hearing abilities (yes, they hear prey moving under the sand!) to snatch up whatever small invertebrates are active at night. This primarily includes:
- Beetles and their larvae: A major component. These are often harder-bodied insects.
- Moths and other flying insects: They will leap to catch them.
- Isopods (pill bugs) and small spiders: Readily available in micro-habitats.
- Termites and ants: Especially after rains trigger swarms.
The key takeaway? Variety and chitin. Their wild diet is incredibly diverse, not just one type of bug. It also includes insects with harder exoskeletons, which may aid in digestion and provide specific nutrients. This is a detail many care sheets gloss over. In captivity, offering only soft-bodied insects like waxworms can lead to nutritional gaps and even impaction over the long term because the digestive system isn't getting the roughage it's evolutionarily tuned for.
The Captivity Menu: Building a Balanced Insect Rotation
You can't replicate the wild menu exactly, but you can build a superb substitute. Think in terms of staple feeders, occasional feeders, and rare treats. The size of the insect should never be wider than the space between your gecko's eyes.
Gut-Loading is Non-Optional: You are what you eat, and your gecko is what its food eats. 24-48 hours before feeding, give your insects a nutrient-packed diet of high-quality commercial gut-load food, fresh vegetables (sweet potato, carrots, leafy greens), and oats. This directly transfers nutrients to your gecko. Feeding insects nothing but cardboard is a recipe for malnutrition.
Staple Feeders (The 80% of the Diet)
These should form the backbone of every feeding.
Crickets (Acheta domesticus/Gryllodes sigillatus): The classic for a reason. They're mobile, stimulating to hunt, and nutritionally decent when gut-loaded. I prefer banded crickets (Gryllodes) as they are less prone to die-offs and are quieter. A common mistake is using crickets that are too large. For an adult frog-eye, a medium cricket is perfect.
Dubia Roaches (Blaptica dubia) or Discoid Roaches: My personal favorite. They are meatier, less jumpy, have a better calcium-to-phosphorus ratio than crickets, and don't smell or make noise. They also can't climb smooth surfaces, which is a bonus. If your gecko is a picky eater, try roaches. Many of mine took to them immediately and seemed to grow better on them.
Occasional Feeders (Rotate in weekly)
These add crucial variety.
Black Soldier Fly Larvae (Calciworms, Phoenix Worms): A nutritional powerhouse. They are naturally high in calcium, so they can be used as a partial calcium source. They're soft but wriggly, and most geckos love them. Don't rely on them solely, as they are fatty.
Silkworms (Bombyx mori): Another excellent, soft-bodied feeder. High in protein, moisture, and digestible. They can be pricey and fragile, but they're worth including now and then.
Rare Treats (Once or twice a month)
Use these sparingly for enrichment or weight gain.
Mealworms and Superworms (Zophobas morio): Here's a non-consensus point: I'm cautious with these. They have a high chitin-to-meat ratio and are fatty. In a varied diet, they're fine as a monthly treat. But I've seen too many geckos fed primarily mealworms develop impaction and become obese. They also burrow quickly, making them less ideal for a sandy enclosure. If you use them, crush the head of a superworm first to prevent biting.
Waxworms (Galleria mellonella): Pure gecko candy. Extremely high in fat, low in everything else. These are for putting weight on a sick gecko or as a very rare bribe. A healthy gecko getting regular waxworms will quickly refuse other, healthier food.
How Often and How Much to Feed Your Frog-Eyed Gecko
This isn't one-size-fits-all. It depends on age, metabolism, and individual activity level.
| Life Stage | Feeding Frequency | Amount per Feeding | Key Notes |
|---|---|---|---|
| Hatchling/Juvenile (0-6 months) | Daily | 5-10 appropriately small insects (e.g., pinhead crickets, small BSFL) | They are growing rapidly. Food should be available daily. Don't leave uneaten prey overnight. |
| Sub-Adult (6-12 months) | Every other day | 4-8 medium-sized insects | Growth is slowing. Monitor body condition to adjust amount. |
| Adult (12+ months) | 2-3 times per week | 3-6 sizable insects (e.g., 2-3 adult dubias, 4-5 crickets) | Maintenance feeding. The goal is a plump tail base, not a fat body. |
I feed my adults on Tuesday and Friday evenings. This predictable schedule seems to work well, and they are often waiting at the front of the enclosure around that time. The amount is a guideline. On a "dubia day," two large roaches might be plenty. On a "cricket day," it might take five. Watch your gecko. Stop when they lose interest. A slightly rounded abdomen after eating is fine; a distended, sausage-like belly is overfeeding.
The Non-Negotiable: Calcium and Vitamin Supplements
This is where most new keepers fail, often with tragic consequences like Metabolic Bone Disease (MBD). Insects alone are not nutritionally complete.
You need two powders:
- Plain Calcium Carbonate (with Vitamin D3): Used at every single feeding for growing juveniles and egg-laying females. For adults on a varied diet, I use it at about 75% of feedings. The D3 is critical for calcium absorption, especially under artificial UVB lighting (which you should provide, but that's another topic).
- A high-quality Multivitamin: This contains Vitamin A, other B vitamins, and trace minerals. I use this once a week for adults, twice a week for juveniles.
My dusting routine: I keep insects in a small deli cup, add a tiny pinch of powder, and shake gently to coat them like a light dusting of powdered sugar. It should be a fine film, not a clumpy paste. I alternate between calcium and multivitamin days. For example: Feed Monday (Calcium+D3), Wednesday (Multivitamin), Friday (Calcium+D3).
Avoid "All-in-One" supplements daily. Many products combine calcium, D3, and multivitamins. Using these at every feeding can lead to vitamin toxicity, particularly of fat-soluble vitamins like A and D3. Follow the product instructions meticulously, but when in doubt, separate your calcium and multivitamin.
Top Feeding Mistakes I See All The Time (And How to Avoid Them)
After years in online forums and talking to vets, these patterns emerge constantly.
Mistake 1: The Monotony Meal Plan. Feeding only crickets, forever. This leads to nutritional deficiencies and a bored gecko. Rotate your feeders. Your gecko might even show preferences—one of mine goes crazy for silkworms but is lukewarm on BSFL.
Mistake 2: The "Supplements Are Optional" Mindset. They are not. MBD is a slow, painful, and debilitating disease. Dusting takes 10 seconds. Just do it.
Mistake 3: Feeding Insects That Are Too Large. A gecko will often try to eat a bug that's too big, leading to regurgitation, stress, or even choking. When in doubt, go smaller. Their jaw structure isn't built for massive prey.
Mistake 4: Leaving Uneaten Live Prey in the Enclosure. Crickets and mealworms can bite and harass your gecko, especially when it's sleeping during the day. This causes stress and open wounds. Always remove uneaten insects after 15-20 minutes. Use a feeding dish for worms to help contain them.
Mistake 5: Ignoring Hydration. While they get moisture from food, a shallow, sturdy water dish with fresh water must always be available. I occasionally mist one corner of the enclosure lightly in the evening to simulate dew, and I've seen them lick droplets.
Your Frog-Eyed Gecko Feeding Questions, Answered
My frog-eyed gecko suddenly stopped eating. What should I check first?
Don't panic immediately. First, check the environmental basics: Is the temperature gradient correct (cool side ~75°F, warm side ~88°F)? A drop in temperature is the most common cause of a hunger strike. Is it shedding? They often refuse food during this time. Next, evaluate your feeder insects. Have you changed the type or size? Try offering a different staple, like switching from crickets to dubia roaches. If the fast lasts more than two weeks for an adult, or if you see significant weight loss (the tail thins), it's time for a reptile vet visit to rule out parasites or other illness.
Can I feed my frog-eyed gecko fruits or vegetables?
No. Their digestive systems are not equipped to process plant matter. They lack the necessary enzymes and gut flora. Offering fruit or veg will do nothing nutritionally and may cause digestive upset or diarrhea. All their nutrition must come from properly prepared insects.
Is it okay to use dead/freeze-dried insects instead of live ones?
I strongly advise against it. Frog-eyed geckos are stimulated by the movement of live prey. Their hunting instinct is key to their feeding response. Freeze-dried insects also lack moisture and are often nutritionally inferior. The process of hunting and catching live food is part of their natural behavioral enrichment. If you're squeamish about live insects, this might not be the right pet for you.
How do I know if I'm over-supplementing with calcium?
Visual signs are rare until it's a serious problem. The safest approach is to stick to a scheduled dusting routine and avoid the "all-in-one" daily supplements mentioned earlier. If you provide a UVB light (which you should), your gecko will synthesize its own D3, so you can potentially use a calcium powder without D3 for some feedings. This requires more precise balancing. For most keepers, using a calcium+D3 powder at most feedings and a multivitamin once a week, while offering a varied diet, is a safe and effective protocol. When in doubt, consult a reptile nutrition resource like the Association of Reptilian and Amphibian Veterinarians (ARAV) website for guidelines.
My gecko only wants to eat mealworms. How do I get it to accept other foods?
This is a classic case of "junk food" addiction. You need to be patient and stubborn. First, stop offering mealworms completely for at least two weeks. Offer a different, wiggly staple like a gut-loaded cricket or a dubia roach. You can try "braining" a cricket (gently squishing the head to release scent) to make it more appealing. Sometimes, offering the new food later in the evening when the gecko is most active helps. It may refuse food for a few meals. A healthy adult can handle this. Once it accepts the new staple, you can reintroduce mealworms as a very rare treat, not a staple.
Feeding your frog-eyed gecko isn't complicated, but it does require attention to detail. Think variety, think small, and never skip the supplements. When you see that plump tail and those bright, alert eyes watching you from the sand, you'll know you've got the menu just right.
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