When Do Leopard Gecko Hatchlings First Eat?
Why hatchlings don't eat immediately
A newly hatched leopard gecko still has some internal yolk reserve to draw on, which is why it's completely normal for a hatchling to show no interest in food for the first several days of life.
The first shed comes first
Most hatchlings shed for the first time within about a week of hatching, and it's common for keepers to wait for this first shed before offering the first meal, rather than pushing food on a gecko that isn't showing interest yet.
Sizing the first meals
Prey should be no wider than the space between the hatchling's eyes — this rule of thumb applies at every life stage, but is especially important for tiny hatchlings where an oversized insect poses a real choking or regurgitation risk.
When to worry
A hatchling that still won't eat after its first shed, or that's visibly losing rather than maintaining condition, is worth a vet check rather than continued waiting.
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A single adult leopard gecko needs a 20-gallon long tank as an absolute minimum, with a 36x18 in (40-gallon breeder) footprint now considered the recommended standard — plus a secure lid, an under-tank heater on a thermostat, a thermal gradient, at least three hides, and a shallow water dish.
Set up in this order: substrate, then heat source wired through a thermostat, then hides and water dish, then decor — and run the whole enclosure for at least 24–48 hours to confirm stable temperatures before your gecko moves in.
Hatchlings can start in a 10-gallon tank or tub, juveniles do well in 20 gallons, and adults need a 20-gallon long as an absolute minimum — with 36x18 in (40-gallon breeder) now the widely recommended standard, not just an upgrade.
Heat a leopard gecko enclosure with an under-tank heater and/or overhead heat source (halogen or deep heat projector) wired through a thermostat — a thermostat is mandatory, not optional, and heat rocks should never be used.
Leopard geckos can survive without UVB using dietary D3 supplementation, but current husbandry guidance now recommends low-level UVB (roughly 2–6% T5) as best practice — it improves D3 synthesis, bone density, and natural behavior, and views on it have shifted significantly from older nocturnal-species advice.
Keep ambient humidity around 30–40% across most of the enclosure, with a dedicated humid hide raised to roughly 70–80% to support smooth, complete sheds.