Indonesian Blue-tongued Skink — Fact Sheet

Tiliqua gigas · Indonesian Blue-tongued Skink

Full care guide and sources

📋 At a glance

🏠 Enclosure

Plan the adult enclosure before purchase. The minimum adult setup used here is 150 x 75 x 60 cm, with about 1.125 m² of floor area. Humid skinks still need floor space and air exchange; a small wet enclosure is not an acceptable shortcut.

🪨 Substrate and furnishings

Use 12-18 cm of moisture-buffering substrate such as cypress mulch, soil/coco mix, leaf litter, or another reptile-safe blend that holds humidity without becoming sour. Keep new arrivals on simpler substrate during quarantine until feeding, feces, mites, and skin condition are clear.

Provide broad hides on both warm and cool sides, a humid retreat, rough surfaces for shedding, and a basking zone wide enough for the body. Avoid cedar, pine, scented bedding, slick floors, and swampy setups with poor airflow.

💡 Lighting

Use bright visible light and species-appropriate UVB. Measure lamp output when possible, because reflector, mesh, height, and lamp age change real exposure. Night lighting is unnecessary unless used briefly for observation.

Plan lighting around Ferguson Zone 2 and a 10-12 hour photoperiod, with shaded retreats so the skink can leave the UV and heat zone.

🌡️ Temperature

• Basking spot: 35-40 °C
• Daytime air: 26-30 °C
• Cool zone: 23-26 °C
• Night: 21-24 °C

💧 Humidity and water

Target humidity is 60-80%, with temporary shed support around 75-90%. Provide humidity as cycles and retreats rather than making the entire enclosure constantly wet; keep bowls, hides, and substrate clean.

Use ventilation and substrate depth to hold humidity without stagnant air. A humid hide is useful, but repeated retained shed usually means the whole moisture gradient, temperature, or hydration routine needs review.

🪳 Feeding

Feed for steady body condition rather than maximum appetite. Juveniles may eat every 2-3 days; most healthy adults do better around every 5-7 days, with frequency adjusted for body condition and activity.

Use a varied omnivorous rotation: leafy greens and safe vegetables, snails or insects where appropriate, egg or lean animal protein in moderation, occasional fruit, and quality prepared diets as part of the mix. Keep fruit and rich protein controlled because overweight adults develop quickly in captivity.

Use plain calcium regularly when UVB is provided, calcium with D3 only when the lighting and diet plan justify it, and a reptile multivitamin sparingly according to product directions. Remove wet food before it spoils in humid enclosures.

🩺 Health — warning signs

Quarantine new animals, record weight, and watch for appetite loss, abnormal posture, retained shed, skin lesions, mites, mouth injury, respiratory signs, swelling, diarrhea, and sustained hiding. Many Indonesian blue-tongues in trade are imports or recent descendants of imports, so fecal testing and a reptile-veterinary check are often worth planning.

Most chronic problems trace back to enclosure size, incorrect heat, poor ventilation, weak UVB, unsuitable diet, dirty wet substrate, dehydration, or repeated stress. Fixing the environment early is usually easier than treating advanced respiratory or skin disease.