African Fat-Tailed Gecko Feeding: Schedule, Diet, and Why They Stop Eating

This species can go months without eating and be completely fine, which makes "how long is too long" the wrong question, tail thickness is the right one.

Feeding Schedule by Age

• Hatchlings (under about 4 months): Fed daily, about 5 crickets sized around a quarter inch, sizing up as the gecko grows.
• Juveniles: Daily at the young end, or about 9 crickets or mealworms 3 times a week at the end that treats a juvenile like a small adult. The gap is about how old a "juvenile" is, so feed a still-growing animal daily and move it toward the adult schedule as the tail fills out.
• Adults: 3 times a week, 3 to 4 times a week, or a condition-based tiered schedule: young adults every 2 to 3 days, mature adults with a visibly fat tail only every 5 days. Treat it as a range and watch the tail.

Portion rule of thumb: about 2 appropriately sized bugs per inch of body length, or as much as the gecko eats in about 15 minutes. Prey should never be wider than the space between the gecko's eyes.

What African Fat-Tailed Geckos Eat

An obligate insectivore. Staple feeders: crickets, dubia roaches, discoid roaches, mealworms, superworms, and black soldier fly larvae. Silkworms, hornworms, waxworms, and pinkie mice are occasional, higher-fat supplements, not staples. All feeder insects should be captive-bred, never wild-caught, to avoid pesticide and parasite exposure.

Gut-load feeder insects 24 to 48 hours before offering, using a commercial gut-load or leafy greens and sweet potato. Dust with plain, phosphorus-free calcium at most feedings, every feeding at the strict end and at least 3 times a week at the other, with a calcium and D3 combo used once or twice a week on top. Skip any calcium supplement that also contains phosphorus, which can damage the kidneys and cause gout. Use feeding tongs to control portions and keep prey from burrowing into substrate. Fresh water in a shallow dish should be available at all times, changed daily.

Safe Treats and Foods to Avoid

Safe, sparingly, due to fat content: waxworms, silkworms, commercially raised hornworms, and pinkie mice.

Never keep one on pure sand: it dries the gecko out, interferes with shedding, and can cause impaction if swallowed with prey. That is a different thing from a topsoil-and-sand mix, which is what a burrowing species actually wants underfoot. Never feed: ladybugs, fireflies, monarch butterflies, lubber grasshoppers, wild tomato-plant hornworms, box elder bugs, assassin bugs, centipedes, hairy or spiny caterpillars, bees, and wasps, generally because these are wild-caught species carrying toxin or contamination risk rather than farmed feeders. Only feed captive-bred insects across the board.

Why African Fat-Tailed Geckos Stop Eating

1. Seasonal appetite drop. As daylight hours shorten in fall and winter, adults commonly reduce food intake or stop for a period. Juveniles typically keep eating normally through it.
2. Breeding season. Females may go off food for a few days before laying eggs, tied to an annual breeding season spanning roughly 4 to 5 months.
3. Shedding. Energy-intensive and commonly paired with a temporary appetite drop. If humidity is too low, the shed can get stuck, including retained eye caps, which can cause real lethargy and reduced eating that needs intervention, a 15 to 30 minute soak in warm water and raised humidity.
4. Stress. Newly acquired or recently handled geckos may refuse food temporarily. Minimal handling until the gecko is reliably eating and defecating is the standard advice.
5. Insufficient enclosure temperature. A gecko in a too-cool enclosure can respond as though brumation is starting, suppressing appetite even outside the normal seasonal window, a husbandry fix, not an emergency by itself.
6. Dehydration. Inadequate humidity or water access can suppress appetite, and shedding-related dehydration that continues beyond about a week can become fatal if not corrected.
7. Illness. Internal parasites, bacterial infection, or rarely tumors suppress appetite, typically alongside weight loss and lethargy.
8. Old age. Elderly geckos can lose teeth and struggle with hard-bodied prey like crickets, softer prey helps avoid a slide toward starvation.
9. Extended picky phases. Hobbyist records document otherwise-healthy geckos refusing food for months at a stretch, one owner reported roughly 6 to 7 months, while staying at a stable weight with normal behavior. The tail's large fat reserve is credited with buffering these long gaps.

When to Worry

There is no universal day count here: the tail fat reserve genuinely lets healthy adults fast for weeks to several months without harm. Body condition and behavior matter far more than duration.

Real red flags: genuine weight loss, distinct from a tail that's merely a bit less plump, a tail thinner than the neck is the concerning sign. A bloated belly, lethargy or weakness beyond normal seasonal slowdown, retained shed that isn't resolving with humidity and soaking, and dehydration signs persisting alongside not eating, potentially fatal if unresolved past about a week, all warrant a vet visit. Schedule an exam if the gecko stops eating, loses real weight, has retained shed, or shows weakness, and keep up with annual wellness visits and routine weight checks to catch problems early.

What you feed the crickets and roaches matters as much as which ones you buy: gut loading runs on a 24 to 72 hour window, and it doesn't replace dusting.

Sources & Further Reading