Crested Gecko (Adult) Nutrition Guide

Practical, evidence-based feeding guide for adult crested geckos: commercial CGD use (Pangea, Repashy), insect supplementation, calcium/D3, fruit treats, feeding schedules, and signs of problems.

Nutritional Snapshot

• Typical adult weight: 30–60 g (commonly 35–50 g)
• Estimated maintenance energy: ~200–250 kcal/kg/day (≈10–13 kcal/day for a 50 g gecko) — see details below
• Macronutrient targets (as-fed / rehydrated CGD typical ranges): protein 10–16%, fat 3–8%, carbohydrates (including sugars) 65–80%, crude fiber 2–6%
• Key micronutrients: calcium (aim Ca:P ≥ 1.5:1), vitamin D3, vitamin A, vitamin E, trace minerals (zinc, manganese, selenium)
• Supplements: calcium carbonate or calcium citrate (dust insects or lightly dust CGD), multivitamin with D3 for intermittent use, calcium without D3 for routine dusting
• Feeding frequency (adult): primary CGD 3×/week or small daily meals; live feeder insects 1×/week as a supplement

H2: Overview — What Adult Crested Geckos Need

Crested geckos (Correlophus ciliatus) are omnivorous, with diets in captivity based on complete commercial crested gecko diets (CGDs) plus occasional live invertebrates and fruit treats. Adult crested geckos have lower protein needs compared with strictly insectivorous reptiles and higher carbohydrate intake due to the fruit component of their natural diet.

Use commercially formulated CGDs (Pangea, Repashy) as the dietary backbone for most adult geckos. These products are designed to provide balanced macronutrients and micronutrients when prepared and fed correctly.

H2: Caloric Requirements — How Much Energy Do Adults Need?

Estimating energy needs in reptiles varies with temperature, activity, body condition and reproductive status. A practical maintenance target for adult crested geckos is:

• Rough estimate: 200–250 kcal/kg body weight/day
• Example: a 50 g adult = 10–12.5 kcal/day

H2: Macronutrient Breakdown (Targets & Rationale)

• Protein: 10–16% (as-fed, rehydrated CGD) — adults do not require the very high protein used for growing insectivores; excess protein can stress kidneys over long periods.
• Fat: 3–8% — supports energy density and fat-soluble vitamins without excess caloric load.
• Carbohydrates (sugars/starches): 65–80% — CGDs use fruit purees and complex carbs as energy; monitor sugar content to avoid obesity.
• Crude fiber: 2–6% — aids gut motility.

H2: Key Micronutrients & Supplementation

• Calcium: Aim for a dietary Ca:P ratio of ≥1.5–2:1. CGDs vary; many are formulated with bone-health in mind. If you feed whole insects, dust them with a calcium supplement (see below).
• Vitamin D3: Required for calcium absorption. If you use a CGD that contains D3, additional routine D3 supplementation is often unnecessary and could risk hypervitaminosis if overdosed. If your diet lacks D3 or you do not provide any UVB, use a multivitamin with D3 intermittently under veterinary guidance.
• Multivitamins: Use a reptile multivitamin (with D3) no more frequently than every 2–4 weeks for adults if the CGD is complete; more frequent use for growing geckos or breeders may be indicated per vet recommendation.
• Trace minerals and fat-soluble vitamins: Ensure a balanced product or supplement per the product’s feeding guidance.

• Calcium without D3: Dust live insects lightly each time they’re offered (or dust every 1–2 feedings if insects are rare treats)
• Multivitamin with D3: Every 2–4 weeks (or per veterinary recommendation)
• If the CGD is labeled as ‘complete with D3’, avoid routine D3-containing dust on top of the diet without vet advice

• Pangea (FruitBlend, Insect Pro, etc.): Pangea’s crested gecko formulas are widely used as a staple. Follow the label for mixing ratios (powder:water), storage, and feeding amounts. Pangea products are formulated to be complete when mixed properly.
• Repashy (Creme diets, Fruit Mixes): Repashy offers several diets for crested geckos (e.g., Crested Gecko Diet, Grub Pie variants). They are designed to be complete and often have high calcium content and appropriate Ca:P ratios.

• Always rehydrate powder to the manufacturer’s recommended viscosity. Too-thick or too-thin mixtures can reduce intake or spoil quickly.
• Prepare small batches and refrigerate leftovers per label instructions. Discard spoiled food.
• Use the product’s portioning guidance as your starting point, then adjust for body condition and activity.

Why include insects: live feeders provide variety, enrichment, and extra protein and chitin, which may help gut health. Adults only require insects as occasional treats, not staples, if fed a complete CGD.

Frequency and quantity:

• Adult supplementation: 1 small feeding of gut-loaded feeders once every 7–14 days
• Typical feeders: small crickets, Dubia roaches, phoenix worms, black soldier fly larvae (soldier fly larvae are high in calcium when gut-loaded)
• Quantity: Keep feeder size ≤ head size of the gecko. Offer 2–5 small insects per supplemental feeding, depending on size of gecko and insect.

• Dust feeders with calcium powder without D3 every feeding that insects are offered, or at minimum every other insect feeding
• Use multivitamin powder (with D3) no more than every 2–4 weeks unless directed by a vet

• Occasional fresh fruit/fruit puree (banana, mango, pear, peach) can be offered as a small treat (about a pea-size or less, 1–2× per week) or mixed into CGD sparingly
• Avoid citrus (high acidity) and sugary human desserts
• Baby food: plain fruit baby food (no additives, no sugar) can be used occasionally to transition picky eaters

Options for adult feeding:

• Option A — Meal feeding (recommended for weight control): Prepared CGD offered 3×/week (e.g., Monday/Wednesday/Friday). Offer an amount that roughly meets caloric needs for those days; let gecko eat for up to 1 hour and remove leftovers to prevent spoilage.
• Option B — Small daily meals: Offer a small pinch or 0.25–0.5 tsp of properly mixed CGD daily and remove after several hours; adjust amount to total weekly caloric target.
• Live insects: 1×/week as enrichment
• Multivitamin: every 2–4 weeks
• Calcium dust (without D3): with each insect feeding

H2: Sample Meal Plan (Adult, 50 g)

• Goal energy: ≈10–12 kcal/day → weekly target ≈70–85 kcal
• Meal-fed example (3×/week): Prepare CGD per label; offer ~1.5–2 teaspoons rehydrated product per feeding (adjust for specific product calories). Remove uneaten food after 1–2 hours. Offer 1 small serving of live crickets (gut-loaded) once per week dusted with calcium.
• Daily small-meal example: Offer 1/3 teaspoon properly hydrated CGD daily and 1 tiny fruit puree treat once weekly

H2: Transitioning to a New Diet or New Brand (Stepwise Protocol)

• Step 1 (Days 1–3): Offer current diet plus small amount (10–25%) of new CGD mixed into old to let gecko taste the new formula
• Step 2 (Days 4–10): Gradually increase proportion of new CGD (25–50% → 75%) while decreasing old diet
• Step 3 (Day 11–14): Switch to 100% new CGD if eating well
• Tips: Keep humidity and temperature consistent during transition. Use a favorite treat (small cricket or fruit baby food) to encourage eating. If appetite falls for >3 days or weight loss occurs, slow transition and consult your veterinarian.

• Stable weight and good body condition (rounded but not obese tail base and torso)
• Regular, formed feces (small, dark pellets with white urate)
• Healthy skin and regular complete sheds
• Energetic, active behavior at normal times (no prolonged hiding)
• Good appetite for offered meals and occasional treats

Seek veterinary advice if you see any of the following:

• Unexplained weight loss (>5–10% body weight) or progressive thinness
• Lethargy, muscle weakness, tremors, or twitching (possible metabolic bone disease)
• Softening of bones, deformities, or jaw (rubber jaw)
• Recurrent, incomplete sheds or retained shed around toes/eyes
• Diarrhea, frank blood in stool, or very loose feces
• Increased thirst or urination (possible renal issue if high-protein or long-term imbalance)

H2: Practical Notes on UVB and Vitamin D3

• Many keepers provide low-level UVB (2.0–5.0 µmol? 5–12 µW/cm2) in addition to dietary D3. UVB helps synthesize vitamin D3 in the skin and can assist calcium metabolism.
• If you provide consistent UVB and a D3-containing CGD, monitor for signs of oversupplementation. Discuss combined UVB + D3 dietary input with your veterinarian or a board-certified veterinary nutritionist.

• Choose CGDs marketed as “complete” for crested geckos and follow manufacturer rehydration and storage instructions
• Compare guaranteed analyses and Ca:P ratios when possible. Look for explicit calcium content and whether vitamin D3 is included
• Read reviews, but prioritize peer-reviewed sources and veterinary advice for health concerns

• WSAVA Global Nutrition Committee — Clinical Nutrition Guidelines and resources
• Mader, D.R. (Ed.). Mader’s Reptile Medicine and Surgery — authoritative text on reptile nutrition and clinical care
• Manufacturer product pages: Pangea Pet Foods, Repashy Superfoods — for formulation specifics and feeding instructions

H2: Quick Checklist Before You Feed

• Is the CGD mixed correctly and fresh?
• Is the portion appropriate for body weight and activity?
• Are insects gut-loaded and dusted as needed?
• Is the gecko’s weight and body condition being tracked?

Consult your veterinarian or a board-certified veterinary nutritionist for personalized dietary recommendations.

Frequently Asked Questions