Emerald Tree Skink — Fact Sheet
Lamprolepis smaragdina · Emerald Tree Skink
📋 At a glance
| Adult size | 21.5-25 cm |
| Lifespan | 7-10 years |
| Legal | CITES not listed; EU not listed; National rules also apply (2026-09-17). |
| Origin | The species occurs on tropical islands from the Philippines and parts of Indonesia to New Guinea and parts of the western Pacific. |
| Activity | Diurnal |
| Difficulty | Intermediate |
🏠 Enclosure
- Provide one adult with at least the practical space offered by a 90 × 45 × 90 cm enclosure.
- Height must contain usable branches, not empty air.
- Solitary keeping is the simplest starting arrangement; groups require more space, duplicate resources and separation at the first persistent chasing or feeding exclusion.
🪨 Enclosure furniture
- Fit anchored vertical and diagonal branches, cork tubes and dense pesticide-free foliage at several heights.
- Use 8–10 cm of moisture-retaining soil above a drained base, covered by leaf litter.
- Keep feeding positions reachable for cleaning.
💡 Lighting
- Provide bright visible light and 11–13 hours of daylight.
- Position UVB and heat over the same branch, aiming for UVI 2–3 at the basking animal’s back and near-zero exposure inside foliage.
- Measure through the actual mesh at the closest reachable point, and prevent climbing onto lamps.
🌡️ Temperature
- Provide a 33–35 °C basking surface, cooler air around 24–29 °C and nights around 20–25 °C.
- Use a dimming thermostat and verify air and surface temperatures independently.
- Keep a shaded escape route available even near the upper branches; a tall enclosure can trap dangerous heat at the roof.
💧 Humidity & water
- Maintain approximately 60–80% daytime humidity, with a brief rise after evening misting and subsequent drying of leaf surfaces.
- Supply fresh water in a stable accessible bowl; misting droplets are an additional drinking opportunity.
- Cross ventilation and drainage prevent a humid habitat becoming stagnant and waterlogged.
🪳 Diet
Staple foods — follow the feeding schedule:
- Feed gut-loaded insects such as crickets, roaches and locusts as the main diet, with a small amount of suitable complete fruit-based gecko diet about weekly for variety.
- Feed juveniles daily and adults every other day, adjusting quantity to condition.
- Sweet fruit is occasional; fruit alone, dog food and wild-caught insects are unsuitable staples.
- Choose prey no wider than the space between the eyes; offer smaller items if swallowing looks difficult.
In moderation:
- Sweet fruit is a small part of a varied diet, never the only food.
Avoid:
- Pesticide-contaminated food, spoiled leftovers and unverified wild-collected foods.
Supplements:
- Dust insects with calcium and use a reptile multivitamin according to UVB provision and its label.
- With effective measured UVB, use plain calcium for routine dusting and obtain D3 from a coordinated, label-directed vitamin plan; without effective UVB, dietary D3 needs deliberate provision.
- Do not stack D3 products.
🩺 Health — warning signs
- A thin tail base, persistent hiding, swollen jaw, weak grip or wounds need assessment.
- Check whether another skink monopolizes heat or food before assuming disease, and consult a reptile veterinarian for persistent signs.
- Capture with a container when necessary; never pull the tail.
- Weak jaws and poor grip can indicate metabolic bone disease; repeated straining or abdominal swelling may indicate obstruction or egg binding.
- These require veterinary diagnosis, not extra supplements or home extraction.