Crested geckos primarily eat crickets, roaches, and mealworms, supplemented by occasional fruit and commercial diets.
The Dietary Needs of Crested Geckos
Crested geckos (Correlophus ciliatus) have become popular pets due to their manageable size and relatively simple care requirements. Understanding their diet is crucial for maintaining their health and longevity. While they are often thought of as frugivores—feeding mainly on fruit—they actually thrive on a diet rich in insects that provide essential proteins and nutrients.
Their natural habitat in New Caledonia offers a variety of insects, which form the backbone of their diet. In captivity, replicating this balance is key to preventing malnutrition, metabolic bone disease, and other health issues. Knowing exactly what insects crested geckos eat helps owners provide an optimal diet that supports growth, reproduction, and overall vitality.
What Insects Do Crested Geckos Eat? – Core Insect Choices
Crested geckos are insectivorous opportunists. They consume a variety of insects that are safe, nutritious, and easy to digest. Here are the primary insect options:
Crickets are a staple food for crested geckos due to their availability and balanced nutritional profile. They offer a good amount of protein and fat while being relatively easy to gut-load (feeding nutritious food to the crickets before offering them to the gecko). Gut-loading enhances the nutritional value by increasing vitamins and minerals.
Dubia roaches have surged in popularity as feeder insects because they are low in fat but high in protein. They are less noisy than crickets and don’t produce as much odor. Roaches also have a hard exoskeleton that provides chitin, which may aid digestion.
Mealworms can be offered occasionally but should not be a staple because they contain higher fat levels compared to crickets or roaches. Their exoskeleton is tougher, which sometimes makes them harder for younger or smaller crested geckos to digest.
Occasionally, crested geckos can eat waxworms or silkworms as treats since these insects are rich in fat or protein respectively. However, these should be fed sparingly due to their nutritional imbalances if offered too frequently.
Supplementing with Commercial Diets and Fruit
While insects form the core of their diet, many keepers use commercial crested gecko diets that combine powdered fruit blends with protein sources. These diets simplify feeding routines and ensure balanced nutrition when mixed correctly with water.
Fruits like mashed banana, mango, or papaya can be offered occasionally but never as the sole diet component. Pure fruit lacks sufficient protein and calcium needed for healthy bones and muscle development.
Feeding Frequency and Portion Control
Crested geckos generally require feeding every 2-3 days for adults; juveniles benefit from more frequent meals—daily or every other day—to support rapid growth. Overfeeding insects can lead to obesity or impaction issues if uneaten prey remains in the enclosure.
A good rule of thumb is to offer about 1-2 appropriately sized insects per feeding session for adults. Juveniles need smaller portions but more frequent feedings until they reach maturity at around 12 months.
Nutritional Enhancement: Gut-Loading and Dusting
Gut-loading feeder insects before offering them to your crested gecko is essential for boosting nutrient content. This involves feeding crickets or roaches nutrient-rich vegetables like carrots, kale, or commercial gut-load powders 24-48 hours before feeding them to your pet.
Dusting insects with calcium powder (without phosphorus) before feeding ensures your gecko receives enough calcium to prevent metabolic bone disease—a common problem in captive reptiles. A multivitamin supplement dusted once or twice weekly complements calcium supplementation well.
Risks of Feeding Wild-Caught Insects
Avoid collecting wild insects for your crested gecko’s diet due to risks of pesticides, parasites, or harmful bacteria that could cause illness. Store-bought feeder insects from reputable suppliers guarantee safety standards and consistent nutrition.
Wild-caught bugs may also carry parasites that could infect your pet or disrupt its digestive system. Sticking with commercially bred feeder insects reduces this risk significantly.
Understanding Insect Size for Safe Consumption
Choosing the right size insect is critical for preventing choking or impaction problems. The general guideline suggests offering prey no larger than the space between your gecko’s eyes (roughly one-third of its head length).
For hatchlings and juveniles, tiny pinhead crickets or small roaches work best until they grow large enough to handle bigger prey like adult crickets or medium-sized roaches.
Table: Nutritional Comparison of Common Feeder Insects
| Insect Type | Protein Content (%) | Fat Content (%) |
|---|---|---|
| Crickets | 58-65% | 15-20% |
| Dubia Roaches | 56-60% | 10-12% |
| Mealworms | 47-50% | 25-30% |
| Waxworms (Treats) | 14-18% | 40-50% |
The Role of Hydration in Feeding Insects
Crested geckos often get moisture from their food but still need access to fresh water daily. Live feeder insects contain some water content; however, dusting them lightly with water before feeding can help prevent dehydration—especially in dry environments.
Offering water droplets on leaves inside the enclosure mimics natural dew collection behavior seen in wild crested geckos. This encourages drinking without stressing the animal with deep water dishes it might avoid.
The Importance of Variety in Diet
Feeding only one type of insect over time risks nutritional deficiencies despite supplementation efforts. Rotating between crickets, roaches, mealworms (sparingly), and commercial diets ensures a broader spectrum of nutrients.
Variety also stimulates natural hunting behavior and keeps your crested gecko mentally engaged while reducing boredom-related stress behaviors such as excessive hiding or lethargy.
Avoiding Dangerous Insects for Crested Geckos
Certain insects should never be fed due to toxicity or hard-to-digest exoskeletons:
- Avoid fireflies: They contain toxins harmful even in small amounts.
- No wild ants: Their bites/stings can injure your pet.
- No spiders: Some species may be venomous.
- Avoid large beetles: Their hard shells risk impaction.
Sticking with safe feeder species eliminates risks associated with accidental poisoning or physical harm during feeding sessions.
Cultivating Your Own Feeder Insects at Home
Some enthusiasts prefer breeding crickets or dubia roaches at home for cost-effectiveness and guaranteed freshness. This approach allows control over gut-loading regimens and reduces reliance on pet store supplies prone to stress-related nutrient depletion during transport.
Home breeding requires understanding insect life cycles, temperature control (usually around 80°F), humidity management (40–60%), and sanitation practices to prevent mold growth or infestations.
The Impact of Age on Feeding Preferences
Juvenile crested geckos need higher protein intake relative to adults because they’re growing quickly. This means smaller but more frequent feedings focusing on easily digestible insects like pinhead crickets or tiny roaches are best during this stage.
Adult geckos can handle larger prey items less frequently but still benefit from occasional variety including soft fruits mixed into commercial diets for balanced nutrition without excess fat gain.
The Role of Behavior During Feeding Time
Crested geckos are nocturnal hunters relying heavily on sight and smell cues when stalking prey at night. Offering live insects stimulates natural hunting instincts which helps maintain their agility and mental sharpness.
Some owners report increased activity levels when live feeders move actively within the enclosure compared to frozen-thawed options that lack movement stimuli.
Troubleshooting Common Feeding Issues
Occasionally, crested geckos may refuse certain types of insects due to stress, illness, or environmental factors like temperature fluctuations affecting appetite. It’s important to monitor feeding behavior closely:
- If refusal persists: Try switching insect types or offering commercial diets temporarily.
- If weight loss occurs: Consult a reptile veterinarian immediately.
- If overfeeding signs appear: Reduce portion sizes gradually.
- If uneaten prey accumulates: Remove promptly to avoid contamination.
Patience combined with observation helps pinpoint dietary adjustments needed for optimal health outcomes.
Key Takeaways: What Insects Do Crested Geckos Eat?
➤ Crickets are a staple and provide essential protein.
➤ Dubia roaches are nutritious and easy to digest.
➤ Mealworms should be fed sparingly due to fat content.
➤ Waxworms are a tasty treat, high in fat.
➤ Fruit flies are ideal for juvenile crested geckos.
Frequently Asked Questions
What insects do crested geckos eat as their primary diet?
Crested geckos primarily eat crickets, roaches, and mealworms. These insects provide essential proteins and nutrients vital for their health. Crickets and roaches are especially favored due to their balanced nutritional profiles and ease of digestion.
Are crickets a good insect choice for crested geckos?
Yes, crickets are a staple food for crested geckos. They are widely available, easy to gut-load with nutritious food, and offer a good balance of protein and fat. This makes them an excellent insect option for maintaining gecko health.
Can crested geckos eat mealworms regularly?
Mealworms can be fed occasionally but should not be a regular staple. They have higher fat content and tougher exoskeletons, which can be harder for younger or smaller crested geckos to digest properly.
What benefits do roaches provide to crested geckos?
Dubia roaches are popular feeder insects because they are high in protein and low in fat. They also have a hard exoskeleton containing chitin, which may aid digestion. Additionally, they produce less noise and odor compared to crickets.
Do crested geckos eat insects other than crickets, roaches, and mealworms?
Occasionally, crested geckos can be given waxworms or silkworms as treats. These insects are rich in fat or protein but should be fed sparingly due to their nutritional imbalances if offered too frequently.